Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures:
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| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
Aachen
Shaker Verlag
2019
|
| Series: | Berichte aus der Strömungstechnik
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis Inhaltsverzeichnis |
| Physical Description: | XIX, 119 Seiten Illustrationen, Diagramme 21 cm, 209 g |
| ISBN: | 9783844064766 3844064761 |
Staff View
MARC
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| 245 | 1 | 0 | |a Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures |c Phillip Limbach |
| 264 | 1 | |a Aachen |b Shaker Verlag |c 2019 | |
| 300 | |a XIX, 119 Seiten |b Illustrationen, Diagramme |c 21 cm, 209 g | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 0 | |a Berichte aus der Strömungstechnik | |
| 502 | |b Dissertation |c Ruhr-Universität Bochum |d 2018 | ||
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Record in the Search Index
| _version_ | 1804180271719776256 |
|---|---|
| adam_text | CONTENTS
LIST OF
PUBLICATIONS...........................................................................................................................X
NOMENCLATURE.................................................................................................................................
XII
ABSTRACT........................................................................................................................................
XIX
1
INTRODUCTION..................................................................................................................................1
1.1 PROBLEM DESCRIPTION AND
MOTIVATION....................................................................................1
1.2 STATE OF
KNOWLEDGE................................................................................................................
2
1.2.1 CAVITATION IN
PUMPS.................................................................................................
2
1.2.2 NUMERICAL METHODS FOR THE SIMULATION OF CAVITATING
FLOWS.....................................3
1.2.3 LOW SPECIFIC SPEED CENTRIFUGAL PUMP FLOW
...............................................................
5
1.3 OBJECTIVE AND
SCOPE..............................................................................................................
7
2 FUNDAMENTALS OF
CAVITATION......................................................................................................
9
2.1 PHASE
CHANGE.........................................................................................................................9
2.2
CAVITATION............................................................................................................................
10
2.3 CHARACTERISTIC NUMBERS FOR CAVITATING
FLOW.......................................................................
12
3 PHYSICAL
MODELING.....................................................................................................................
15
3.1 GOVERNING EQUATIONS FOR SINGLE-PHASE
FLOW........................................................................
15
3.2 CAVITATION
MODELING............................................................................................................
15
3.2.1 GOVERNING EQUATIONS FOR CAVITATING
FLOW................................................................16
3.2.2 MASS TRANSFER CAVITATION MODEL (P-M
T)................................................................16
3.2.3 THERMODYNAMIC EQUILIBRIUM CAVITATION MODEL (D-TE)
.......................................
18
3.2.4 COMPARISON OF THE CAVITATION
MODELS....................................................................21
3.3 TURBULENCE
MODELING...........................................................................................................
22
3.3.1 STATISTICAL TURBULENCE
MODELING........................................................... 22
3.3.2 K-OD SHEAR STRESS TRANSPORT
MODEL.........................................................................
23
3.3.3 BOUNDARY LAYER
FLOW...............................................................................................
25
3.3.4 SURFACE ROUGHNESS
MODELING....................................................................................26
3.3.5 MODIFICATION OF THE MIXTURE EDDY VISCOSITY
...........................................................
26
3.4 ROTATIONAL REFERENCE
FRAME..................................................................................................28
4
NUMERICS......................................................................................................................................29
4.1 PRESSURE-BASED FLOW SOLVER
(P-MT)...................................................................................29
4.1.1 INTERPOLATION SCHEMES FOR THE P-MT
METHOD........................................................ 30
4.1.2 IMPLICIT TIME
INTEGRATION.........................................................................................31
4.1.3 PRESSURE VELOCITY
COUPLING......................................................................................31
4.1.4 SOLUTION OF THE SYSTEM OF
EQUATIONS.......................................................................32
4.1.5 INITIAL AND BOUNDARY
CONDITIONS.............................................................................
33
4.1.5.1 AUTOMATIC WALL TREATMENT FOR SMOOTH WALLS
.........................................
33
4.1.5.2 AUTOMATIC WALL TREATMENT FOR HYDRAULICALLY ROUGH WALLS
.....................
34
4.1.6 SOLUTION PROCEDURE OF THE P-MT METHOD
..............................................................
34
4.2 DENSITY-BASED FLOW SOLVER
(D-TE)......................................................................................36
4.2.1 LOW MACH NUMBER MODIFIED NUMERICAL FLUX FUNCTION
..........................................
37
4.2.2 INTERPOLATION SCHEMES FOR THE D-TE
METHOD........................................................37
4.2.3 EXPLICIT 4-STAGE RUNGE-KUTTA TIME
INTEGRATION....................................................38
4.2.4 INITIAL AND BOUNDARY
CONDITIONS.............................................................................
39
4.2.5 SOLUTION PROCEDURE OF THE D-TE M ETHOD
..............................................................
39
4.3 COMPARISON OF THE FLOW
SOLVERS.........................................................................................
40
5 EXPERIMENTAL PUMP
INVESTIGATIONS........................................................................................
41
5.1 PUMP D A TA
...........................................................................................................................
41
5.2 EXPERIMENTS FOR THE R
P12.................................................................................................
42
5.2.1 SINGLE-PHASE
HEAD...................................................................................................
44
5.2.2 HEAD DROP AND NPSH CURVES
.................................................................................
44
5.3 EXPERIMENTAL DATA OF THE
RP26........................................................................................
45
5.3.1 HEAD DROP AND NPSH
3
% CHARACTERISTICS
................................................................
46
5.3.2 LOCAL VOID STRUCTURES, CAVITATION PROBABILITY AND INTENSITY
................................
47
6 ASSESSMENT OF THE COMPUTATIONAL
METHODS...........................................................................
51
6.1 NUMERICAL SETUP OF THE RP26
............................................................................................
51
6.2 SINGLE-PHASE FLOW
RESULTS.....................................................................................................52
6.3 HEAD DROP AND NPSH
3
/
CHARACTERISTICS.............................................................................
53
7 BASIC NUMERICAL INVESTIGATIONS
...............................................................................................
55
7.1 HYDROFOIL
FLOW......................................................................................................................55
7.1.1 SUMMARY OF THE EXPERIMENTAL SETUPS AND PROCEDURES
..........................................
55
7.1.2 NUMERICAL
SETUP......................................................................................................56
7.1.3 EVALUATION OF THE SHEDDING FREQUENCY IN THE
SIMULATIONS....................................59
7.1.4 EVALUATION OF THE CAVITATION PROBABILITY AND INTENSITY
........................................
60
7.1.5
RESULTS......................................................................................................................61
7.2 ORIFICE
FLOW..........................................................................................................................65
7.2.1 SUMMARY OF THE EXPERIMENTAL SETUP AND PROCEDURE
............................................
65
7.2.2 NUMERICAL
SETUP......................................................................................................66
7.2.3
RESULTS......................................................................................................................67
8 SIMULATION OF PUMP
FLOW..........................................................................................................
73
8.1 LOW SPECIFIC SPEED PUMP WITH VOLUTE
(RP12)..................................................................73
8.1.1 NUMERICAL
SETUP.......................................................................................................
73
8.1.2 SINGLE-PHASE FLOW
RESULTS.........................................................................................
76
8.1.3 CAVITATING FLOW
RESULTS............................................................................................
78
8.2 PUMP WITH VANELESS ANNULUS
(RP26)...............................................................................
83
9
CONCLUSIONS.................................................................................................................................
87
10
REFERENCES...................................................................................................................................
91
APPENDIX
A.....................................................................................................................................
107
A.L. INTEGRAL AND DISCRETIZED EQUATIONS FOR THE P-MT
METHOD.............................................107
A.2. AUTOMATIC WALL TREATMENT FOR HYDRAULICALLY ROUGH
WALLS..............................................108
A.3. MEASURED CAVITATION PROBABILITY OF THE
RP26.................................................................
110
A.4. APPROXIMATION OF THE SIDE GAP
FLOW.................................................................................
I L L
A.5. HEAD AND NPSH
3
% CURVES OF THE R
P26............................................................................114
A.6. CAVITATION EROSION
ASSESSMENT...........................................................................................115
A.6.1. STATISTICAL EVALUATION OF EROSION INDICATORS
.........................................................
115
A.6.2. DETECTION OF ISOLATED VOID
COLLAPSES.....................................................................116
A.6.3. CAVITATION EROSION ASSESSMENT IN CENTRIFUGAL PUMPS
..........................................
117
CURRICULUM V
ITAE..........................................................................................................................
119
|
| any_adam_object | 1 |
| author | Limbach, Phillip 1987- |
| author_GND | (DE-588)1046596322 |
| author_facet | Limbach, Phillip 1987- |
| author_role | aut |
| author_sort | Limbach, Phillip 1987- |
| author_variant | p l pl |
| building | Verbundindex |
| bvnumber | BV046025704 |
| ctrlnum | (OCoLC)1108333707 (DE-599)DNB1175229512 |
| dewey-full | 621.6701518 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 621 - Applied physics |
| dewey-raw | 621.6701518 |
| dewey-search | 621.6701518 |
| dewey-sort | 3621.6701518 |
| dewey-tens | 620 - Engineering and allied operations |
| discipline | Maschinenbau / Maschinenwesen |
| format | Thesis Book |
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| genre_facet | Hochschulschrift |
| id | DE-604.BV046025704 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T08:33:07Z |
| institution | BVB |
| institution_GND | (DE-588)1064118135 |
| isbn | 9783844064766 3844064761 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-031407657 |
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| owner | DE-634 |
| owner_facet | DE-634 |
| physical | XIX, 119 Seiten Illustrationen, Diagramme 21 cm, 209 g |
| publishDate | 2019 |
| publishDateSearch | 2019 |
| publishDateSort | 2019 |
| publisher | Shaker Verlag |
| record_format | marc |
| series2 | Berichte aus der Strömungstechnik |
| spelling | Limbach, Phillip 1987- Verfasser (DE-588)1046596322 aut Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures Phillip Limbach Aachen Shaker Verlag 2019 XIX, 119 Seiten Illustrationen, Diagramme 21 cm, 209 g txt rdacontent n rdamedia nc rdacarrier Berichte aus der Strömungstechnik Dissertation Ruhr-Universität Bochum 2018 Haltedruckhöhe (DE-588)4579139-9 gnd rswk-swf Kreiselpumpe (DE-588)4032979-3 gnd rswk-swf Strömung (DE-588)4058076-3 gnd rswk-swf Numerische Strömungssimulation (DE-588)4690080-9 gnd rswk-swf Numerisches Modell (DE-588)4338132-7 gnd rswk-swf Kavitation (DE-588)4163525-5 gnd rswk-swf Cavitation Centrifugal pump Speed / (DLC)sh85126486 / http://id.loc.gov/authorities/subjects/sh85126486 (DE-588)4113937-9 Hochschulschrift gnd-content Kreiselpumpe (DE-588)4032979-3 s Kavitation (DE-588)4163525-5 s Strömung (DE-588)4058076-3 s Haltedruckhöhe (DE-588)4579139-9 s Numerisches Modell (DE-588)4338132-7 s DE-604 Numerische Strömungssimulation (DE-588)4690080-9 s Shaker Verlag (DE-588)1064118135 pbl B:DE-101 application/pdf http://d-nb.info/1175229512/04 Inhaltsverzeichnis DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=031407657&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Limbach, Phillip 1987- Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures Haltedruckhöhe (DE-588)4579139-9 gnd Kreiselpumpe (DE-588)4032979-3 gnd Strömung (DE-588)4058076-3 gnd Numerische Strömungssimulation (DE-588)4690080-9 gnd Numerisches Modell (DE-588)4338132-7 gnd Kavitation (DE-588)4163525-5 gnd |
| subject_GND | (DE-588)4579139-9 (DE-588)4032979-3 (DE-588)4058076-3 (DE-588)4690080-9 (DE-588)4338132-7 (DE-588)4163525-5 (DE-588)4113937-9 |
| title | Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures |
| title_auth | Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures |
| title_exact_search | Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures |
| title_full | Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures Phillip Limbach |
| title_fullStr | Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures Phillip Limbach |
| title_full_unstemmed | Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures Phillip Limbach |
| title_short | Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures |
| title_sort | numerical 3d simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the npsh characteristics and void structures |
| topic | Haltedruckhöhe (DE-588)4579139-9 gnd Kreiselpumpe (DE-588)4032979-3 gnd Strömung (DE-588)4058076-3 gnd Numerische Strömungssimulation (DE-588)4690080-9 gnd Numerisches Modell (DE-588)4338132-7 gnd Kavitation (DE-588)4163525-5 gnd |
| topic_facet | Haltedruckhöhe Kreiselpumpe Strömung Numerische Strömungssimulation Numerisches Modell Kavitation Hochschulschrift |
| url | http://d-nb.info/1175229512/04 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=031407657&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT limbachphillip numerical3dsimulationofunsteadycavitatingflowinlowspecificspeedcentrifugalpumpsandanalysisofthenpshcharacteristicsandvoidstructures AT shakerverlag numerical3dsimulationofunsteadycavitatingflowinlowspecificspeedcentrifugalpumpsandanalysisofthenpshcharacteristicsandvoidstructures |
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