A Characteristic-Featured Shock Wave Indicator for Simulating High-Speed Inviscid Flows on 3D Unstructured Mesh

2021 ◽  
Author(s):  
Yiwei Feng ◽  
Tiegang Liu ◽  
Xiaofeng He ◽  
Bin Zhang ◽  
Kun Wang
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
Unstructured Mesh ◽  
High Efficiency ◽  
Flow Simulation ◽  
Attractive Alternative ◽  
Inviscid Flows ◽  
Speed Flow ◽  
Flow Compression ◽  
Shock Processing

Abstract In this work, we extend the characteristic-featured shock wave indicator based on artificial neuron training to 3D high-speed flow simulation on unstructured mesh. The extension is achieved through dimension splitting. This leads to that the proposed indicator is capable of identifying regions of flow compression in any direction. With this capability, the indicator is further developed to combine with h-adaptivity of mesh refinement to improve resolution with less computational costs. The present indicator provided an attractive alternative for constructing high-resolution, high-efficiency shock-processing method to simulate high-speed inviscid flows.

scholarly journals A characteristic-featured shock wave indicator for simulating high-speed inviscid flows on 3D unstructured meshes

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Yiwei Feng ◽  
Tiegang Liu ◽  
Xiaofeng He ◽  
Bin Zhang ◽  
Kun Wang
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
High Efficiency ◽  
Flow Simulation ◽  
Unstructured Meshes ◽  
Attractive Alternative ◽  
Inviscid Flows ◽  
Speed Flow ◽  
Flow Compression ◽  
Shock Processing

AbstractIn this work, we extend the characteristic-featured shock wave indicator based on artificial neuron training to 3D high-speed flow simulation on unstructured meshes. The extension is achieved through dimension splitting. This leads to that the proposed indicator is capable of identifying regions of flow compression in any direction. With this capability, the indicator is further developed to combine with h-adaptivity of mesh refinement to improve resolution with less computational costs. The present indicator provides an attractive alternative for constructing high-resolution, high-efficiency shock-processing methods to simulate high-speed inviscid flows.

Code validation for high speed flow simulation over the VLS launcherfairing

1993 ◽  
Author(s):  
J. AZEVEDO ◽  
P. MORAES, JR. ◽  
C. MALISKA ◽  
C. MARCHI ◽  
A. SILVA
Keyword(s):  
High Speed ◽  
Flow Simulation ◽  
High Speed Flow ◽  
Code Validation ◽  
Speed Flow

Code Validation for High-speed Flow Simulation Over Satellite Launch Vehicle

1996 ◽  
Vol 33 (1) ◽  
pp. 15-21 ◽  
Author(s):  
J. L. F. Azevedo ◽  
P. Moraes ◽  
C. R. Maliska ◽  
C. H. Marchi ◽  
A. F. C. Silva
Keyword(s):  
High Speed ◽  
Flow Simulation ◽  
Launch Vehicle ◽  
High Speed Flow ◽  
Code Validation ◽  
Speed Flow ◽  
Satellite Launch Vehicle

Flow about Cones at Very High Speeds

1957 ◽  
Vol 8 (4) ◽  
pp. 384-394 ◽  
Author(s):  
H. K. Zienkiewicz
Keyword(s):  
Shock Wave ◽  
High Speed ◽  
Analytic Solution ◽  
Vibrational Excitation ◽  
Circular Cone ◽  
Approximate Analytic Solution ◽  
High Speed Flow ◽  
High Speeds ◽  
Speed Flow ◽  
Very High

Summary:Effects of vibrational excitation and dissociation of air on inviscid high speed flow past a circular cone, at zero incidence, with an attached shock wave, are studied on the assumption of thermal equilibrium. A numerical solution of the problem is outlined and an approximate analytic solution for the flow between the surface of the cone and the shock wave is developed. Two numerical examples are given as an illustration and compared with the corresponding solutions assuming constant air properties.

scholarly journals An edge-based unstructured mesh formulation for high speed tridimensional compressible flow simulation

2012 ◽  
Vol 34 (1) ◽  
pp. 97-104 ◽  
Author(s):  
D. M. Ventura ◽  
P. R. M. Lyra ◽  
R. B. Willmersdorf ◽  
R. S. Silva ◽  
A. R. E. Antunes
Keyword(s):  
Compressible Flow ◽  
High Speed ◽  
Unstructured Mesh ◽  
Flow Simulation ◽  
Edge Based

VALIDATION OF 2D MULTI-BLOCK HIGH-SPEED COMPRESSIBLE TURBULENT FLOW SOLVER

2007 ◽  
Vol 04 (01) ◽  
pp. 33-57 ◽  
Author(s):  
JAWAD KHAWAR ◽  
ANWAR UL-HAQUE ◽  
SAJID RAZA CHAUDHRY
Keyword(s):  
Shock Wave ◽  
Turbulent Flow ◽  
Turbulence Model ◽  
High Speed ◽  
Time Integration ◽  
Flow Simulation ◽  
Stress Model ◽  
Basic Algorithm ◽  
Flow Solver ◽  
Compressible Turbulent Flow

A 2D multi-block high-speed compressible turbulent flow solver CFD2D based on the Jones and Launders two-equation k –ε turbulence model is developed. Method of solution employed is Finite Volume Method. Its basic algorithm is based on the approximate Riemann solver with the three-step Runge–Kutta time integration. Its additional feature includes Wilcox model for compressibility correction of k–ε turbulence model, Girmaji algebraic Reynolds stress (non-linear stress) model and linear stress model for evaluation of turbulent stresses. For validation purpose, code is applied to a 2D diamond aerofoil and a wedge ramp attached to a flat plate. CFD-predicted results are compared to the experimental results for shock wave and shock wave boundary layer interaction on the trailing edge of the fin. Contour plots are also compared to the Schlieren photographs. Flow simulation shows ability of the code to capture the physics of the flow both qualitatively and quantitatively.

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