scholarly journals A Coupling Framework for Multi-Domain Modelling and Multi-Physics Simulations

Entropy ◽  
2021 ◽  
Vol 23 (6) ◽  
pp. 758
Author(s):  
Dario Amirante ◽  
Vlad Ganine ◽  
Nicholas J. Hills ◽  
Paolo Adami
Keyword(s):  
Heat Transfer ◽  
Arbitrary Number ◽  
Data Exchange ◽  
Conjugate Heat Transfer ◽  
Parallel Execution ◽  
Modular System ◽  
Single Interface ◽  
Exchange Of Information ◽  
Domain Modelling ◽  
And Performance

This paper describes a coupling framework for parallel execution of different solvers for multi-physics and multi-domain simulations with an arbitrary number of adjacent zones connected by different physical or overlapping interfaces. The coupling architecture is based on the execution of several instances of the same coupling code and relies on the use of smart edges (i.e., separate processes) dedicated to managing the exchange of information between two adjacent regions. The collection of solvers and coupling sessions forms a flexible and modular system, where the data exchange is handled by independent servers that are dedicated to a single interface connecting two solvers’ sessions. Accuracy and performance of the strategy is considered for turbomachinery applications involving Conjugate Heat Transfer (CHT) analysis and Sliding Plane (SP) interfaces.

An Investigation of Conjugate Heat Transfer Simulations Based on Discontinuous Galerkin Methods on Unstructured Grids

2013 ◽  
Author(s):  
Zengrong Hao ◽  
Xiaodong Ren ◽  
Yin Song ◽  
Chunwei Gu
Keyword(s):  
Heat Transfer ◽  
Discontinuous Galerkin ◽  
Data Exchange ◽  
Conjugate Heat Transfer ◽  
Unstructured Grids ◽  
Fluid Dynamic ◽  
Exchange Process ◽  
Turbulence Models ◽  
Unified Algorithm ◽  
Dg Methods

A framework for the simulations of conjugate heat transfer (CHT) problems using discontinuous Galerkin (DG) methods on unstructured grids is presented. The compressible fluid dynamic equations and solid heat conduction equations are discretized into the explicit DG formulations simultaneously. The Bassi-Rebay method is used in the gradients computation inside both fluid and solid domains. Fully coupled strategy based on the data exchange process via the numerical flux of interface quadrature points is devised. Various turbulence models and the local-variable-based transition model γ -Reθ are assimilated into the unified algorithm framework. The feasibility of the methodology is validated by some test cases. The work can be viewed as a primary attempt towards further investigations of DG and other high-accuracy methods applications in the engineering CHT problems.

Conjugate Heat Transfer Analysis of an Engine Internal Cavity

2000 ◽  
Author(s):  
A. Montenay ◽  
L. Paté ◽  
J. M. Duboué
Keyword(s):  
Heat Transfer ◽  
Conjugate Heat Transfer ◽  
Interaction Model ◽  
Heat Transfer Analysis ◽  
Navier Stokes ◽  
Internal Cavity ◽  
Internal Cooling ◽  
Solid Media ◽  
Coupling Procedure ◽  
And Performance

The analysis of heat transfer in engine cavities or blade internal cooling systems is one of the most challenging work for aircraft engines designers for two main reasons. Firstly, the efficiency of such systems has a direct influence on both life and performance of these engines. Secondly, the available tools to predict heat transfer in both solid parts and surrounding cooling gases, i.e. Navier Stokes and conduction codes, are often used independently. An interaction model between the fluid and solid media is generally required and remains a difficult issue in engine configurations. A coupling procedure between a Navier-Stokes code and a conduction solver is therefore the only way to achieve heat transfer predictions in all flow situations. The objective of this work is to present such a procedure, which has been developed at Snecma and based on a Finite Volume Navier-Stokes code and a commercial Finite Element solver. The first application showed in the paper demontrates, with an uncoupled calculation that the Navier-Stokes code MSD, from ONERA, is able to predict heat transfer with an acceptable accuracy. The discretization used in the solid to predict heat conduction is briefly presented. Then the steady state coupling procedure is exposed and validated with an analytical solution. Finally, a conjugate heat transfer computation in a rotor/rotor cavity of a real engine, with rotating solid disks, is described in detail.

NUMERICAL INVESTIGATION OF CONJUGATE HEAT TRANSFER FROM LAMINAR WALL JET FLOW OVER A SHALLOW CAVITY

2018 ◽  
Vol 49 (12) ◽  
pp. 1151-1170 ◽  
Author(s):  
Maheandera Prabu Paulraj ◽  
Rajesh Kanna Parthasarathy ◽  
Jan Taler ◽  
Dawid Taler ◽  
Pawel Oclon ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Numerical Investigation ◽  
Conjugate Heat Transfer ◽  
Jet Flow ◽  
Wall Jet ◽  
Shallow Cavity ◽  
Wall Jet Flow
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