A fast, decomposed pressure correction method for an intrusive stochastic multiphase flow solver

2021 ◽  
Vol 221 ◽  
pp. 104930
Author(s):  
Brian Turnquist ◽  
Mark Owkes
Keyword(s):  
Multiphase Flow ◽  
Correction Method ◽  
Flow Solver ◽  
Pressure Correction

Rotational pressure-correction method for the Stokes/Darcy model based on the modular grad-div stabilization

2021 ◽  
Vol 160 ◽  
pp. 451-465
Author(s):  
Wei Li ◽  
Jilin Fang ◽  
Yi Qin ◽  
Pengzhan Huang
Keyword(s):  
Correction Method ◽  
Pressure Correction ◽  
Darcy Model ◽  
Model Based

Numerical Investigations of Centrifugal Compressor Flows With Tip Leakage Using a Pressure Correction Method

1993 ◽  
Author(s):  
A. Tourlidakis ◽  
R. L. Elder
Keyword(s):  
Flow Pattern ◽  
High Speed ◽  
Stokes Equations ◽  
Correction Method ◽  
Secondary Flows ◽  
Tip Clearance ◽  
Physical Models ◽  
Wake Flow ◽  
Operating Characteristics ◽  
Pressure Correction

In this paper, a three-dimensional computational model for the solution of the time-averaged Navier-Stokes equations, based on a pressure correction method and the k-ε turbulence model, is presented and implemented for the viscous flow modelling through a series of centrifugal compressors. Theoretical calculations with the current fully elliptic method are carried out and the results are compared critically with available experimental data and with results from other computational models. A radial and two backswept high-speed subsonic compressors with different geometrical and operating characteristics are analysed at design and off-design conditions. In all cases, a wake flow pattern is evident and strong secondary flows are discerned. The tip clearance effects on the relative flow pattern are found to be important and are appropriately simulated. The predictive capability of the current flow model is judged to be encouraging taking into consideration the limitations of the physical models and the numerical schemes involved in the computations.

A conservative pressure-correction method for flow at all speeds

2003 ◽  
Vol 32 (8) ◽  
pp. 1113-1132 ◽  
Author(s):  
D.R. van der Heul ◽  
C. Vuik ◽  
P. Wesseling
Keyword(s):  
Correction Method ◽  
Pressure Correction ◽  
All Speeds

An Efficient Correction Method to Obtain a Formally Third-Order Accurate Flow Solver for Node-Centered Unstructured Grids

2011 ◽  
Vol 51 (2) ◽  
pp. 375-393 ◽  
Author(s):  
Aaron Katz ◽  
Venkateswaran Sankaran
Keyword(s):  
Unstructured Grids ◽  
Correction Method ◽  
Third Order ◽  
Flow Solver

A conservative pressure-correction method for the Euler and ideal MHD equations at all speeds

2002 ◽  
Vol 40 (3-4) ◽  
pp. 521-529 ◽  
Author(s):  
D. R. van der Heul ◽  
C. Vuik ◽  
P. Wesseling
Keyword(s):  
Correction Method ◽  
Mhd Equations ◽  
Pressure Correction ◽  
Ideal Mhd ◽  
All Speeds

Parallelisation of Pressure Correction Method on Unstructured Grids

1999 ◽  
pp. 451-458
Author(s):  
T.M. Lin ◽  
Y.-C. Chuang ◽  
J.K. Lee ◽  
K.L. Wu ◽  
C.A. Lin
Keyword(s):  
Unstructured Grids ◽  
Correction Method ◽  
Pressure Correction

Towards the Parallelisation of Pressure Correction Method on Unstructured Grids

1998 ◽  
pp. 249-256
Author(s):  
Y.-C. Chuang ◽  
J.K. Lee ◽  
K.L. Wu ◽  
C.A. Lin
Keyword(s):  
Unstructured Grids ◽  
Correction Method ◽  
Pressure Correction

scholarly journals Communication Optimization for Multiphase Flow Solver in the Library of OpenFOAM

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1461 ◽  
Author(s):  
Zhipeng Lin ◽  
Wenjing Yang ◽  
Houcun Zhou ◽  
Xinhai Xu ◽  
Liaoyuan Sun ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Message Passing ◽  
Message Passing Interface ◽  
Limiting Factors ◽  
Preconditioned Conjugate Gradient ◽  
Communication Overhead ◽  
Communication Optimization ◽  
Flow Solver ◽  
Costly Communication ◽  
Intermediate Variables

Multiphase flow solvers are widely-used applications in OpenFOAM, whose scalability suffers from the costly communication overhead. Therefore, we establish communication-optimized multiphase flow solvers in OpenFOAM. In this paper, we first deliver a scalability bottleneck test on the typical multiphase flow case damBreak and reveal that the Message Passing Interface (MPI) communication in a Multidimensional Universal Limiter for Explicit Solution (MULES) and a Preconditioned Conjugate Gradient (PCG) algorithm is the short slab of multiphase flow solvers. Furthermore, an analysis of the communication behavior is carried out. We find that the redundant communication in MULES and the global synchronization in PCG are the performance limiting factors. Based on the analysis, we propose our communication optimization algorithm. For MULES, we remove the redundant communication and obtain optMULES. For PCG, we import several intermediate variables and rearrange PCG to reduce the global communication. We also overlap the computation of matrix-vector multiply and vector update with the non-blocking computation. The resulting algorithms are respectively referred to as OFPiPePCG and OFRePiPePCG. Extensive experiments show that our proposed method could dramatically increase the parallel scalability and solving speed of multiphase flow solvers in OpenFOAM approximately without the loss of accuracy.

Computations of gas microflows using pressure correction method with Langmuir slip model

2008 ◽  
Vol 37 (10) ◽  
pp. 1309-1319 ◽  
Author(s):  
Hyung-il Choi ◽  
Dohyung Lee
Keyword(s):  
Correction Method ◽  
Slip Model ◽  
Pressure Correction ◽  
Gas Microflows
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