搜索结果: 1-15 共查到“知识库 粘性流体力学”相关记录67条 . 查询时间(4.976 秒)
具有传输噪声的随机Navier-Stokes方程的增强耗散性
传输噪声 随机Navier-Stokes方程 增强耗散性
2023/12/13
The phenomenon of dissipation enhancement by transport noise is shown for stochastic 2D Navier–Stokes equations in velocity form. In the 3D case, suppression of blow-up is proved for stochastic Navier...
高维标量粘性守恒律平面粘性激波的周期扰动
高维标量 粘性守恒律 平面粘性激波 周期扰动
2023/12/13
This paper studies a Cauchy problem for a scalar multidimensional (multi-d) viscous convex conservation law, in which the initial data is a planar viscous shock with a multi-d periodic perturbation. W...
We prove the time-asymptotic stability of composite waves consisting of the superposition of a viscous shock and a rarefaction for the one-dimensional compressible barotropic Navier-Stokes equations. ...
We establish global-in-time existence and non-uniqueness of probabilistically strong solutions to the three dimensional Navier--Stokes system driven by space-time white noise. In this setting, solutio...
We are concerned with the three-dimensional incompressible Navier–Stokes equations driven by an additive stochastic forcing of trace class. First, for every divergence free initial condition in $L^{2}...
Optimum Shape Design for Unsteady Three-Dimensional Viscous Flows Using a Nonlinear Frequency-Domain Method
Optimum Shape Design Unsteady Three-Dimensional Viscous Flows Nonlinear Frequency-Domain Method
2015/7/2
This paper presents an adjoint method for the optimum shape design of unsteady three-dimensional viscousflows.The goal is to develop a set of discrete unsteady adjoint equations and the correspo...
A Spectral Difference Method for the Euler and Navier-Stokes Equations on Unstructured Meshes
Spectral Diff erence Method Euler Navier-Stokes Equations Unstructured Meshes
2015/7/2
This work focuses on the extension of the recently introduced Spectral Difference Method to viscous flow. The spectral difference method is a conservative pseudo-spectral scheme base...
VISCOUS AERODYNAMIC SHAPE OPTIMIZATION OF WINGS INCLUDING PLANFORM VARIABLES
VISCOUS AERODYNAMIC SHAPE OPTIMIZATION WINGS PLANFORM VARIABLES
2015/7/2
During the last decade, aerodynamic shape optimization methods based on control theory have been intensively developed. The methods have proved to be very e ective for improving wing section shapes fo...
OPTIMAL CONTROL OF UNSTEADY FLOWS USING A TIME ACCURATE METHOD
OPTIMAL CONTROL UNSTEADY FLOWS USING ACCURATE METHOD
2015/7/2
This paper presents an adjoint method for the optimal control of unsteady flows. The goal is to develop the continuous and discrete unsteady adjoint equations and their cor responding boundary c...
Formulation of Kinetic Energy Preserving Conservative Schemes for Gas Dynamics and Direct Numerical Simulation of One-dimensional Viscous Compressible Flow in a Shock Tube Using Entropy and Kinetic Energy Preserving Schemes
Energy Preserving Conservative Kinetic Energy Preserving
2015/6/23
This paper follows up on the author’s recent paper “The Construction of Discretely
Conservative Finite Volume Schemes that also Globally Conserve Energy or Enthalpy”.
In the case of the gas dynamics...
High-Order Numerical Algorithms for Steady and Unsteady Simulation of Viscous Compressible Flow with Shocks
Steady Unsteady Simulation
2015/6/18
Theoretical developments of flux reconstruction method
Unstructured high-order methods
The Flux Reconstruction approach
Energy Stable Flux Reconstruction schemes
Flux Reconstruction as Filtere...
Applications of Dual Time Stepping to Fully Implicit Runge-Kutta Schemes for Unsteady Flow Calculations
Unsteady Flow Calculations Time Stepping
2015/6/18
Accordingly, a fast steady state solver is an essential building block for an implicit
scheme. This leads to a circular situation. We need an implicit scheme for fast
convergence to a steady state, ...
Highly flexible platform for all applied aerodynamics problems and
other problems governed by conservation laws
• Fast turnaround through convergence acceleration techniques
• Framework...
Associate first and second neighbors with each face
• Allows implementation of standard schemes with five-point stencils
(Jameson-Schmidt-Turkel JST, SLIP) in the same code
• Eliminates...
Energy Estimates for Nonlinear Conservation Laws with Applications to Solutions of the Burgers Equation and One-Dimensional Viscous Flow in a Shock Tube by Central Difference Schemes
Energy Estimates Central Diff erence Schemes
2015/6/18
The use of energy estimates to establish the stability of dis
crete approximations
to initial value problems has a long history. The energy meth
od is discussed in
the classical book by Morton and...