Investigation of Effects of Synthetic Jets Flow Control on Drag Reduction by Means of Direct Numeric

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户：liongliong533

【摘要】

：

【作者】

：

Binghua Li Zhixian Ye Lan Xie Jianfeng Zou Yao Zheng

【机构】

：

Center for Engineering and Scientific Computation,and School of Aeronautics and Astronautics,Zhejian

【出处】

：

中国计算力学大会2018暨国际华人计算力学大会2018

【发表日期】

：

2018年10期

【关键词】

：

Synthetic jet Turbulent boundary layer Flow control Drag reduction Dynamic mode

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

　　In this presentation,by means of Direct Numerical Simulation(DNS),flat plate turbulent boundary layer with Slot Synthetic Jets(SSJs)array are investigated to reveal the flow control mechanism in terms of drag reduction,by studying the coherent structures and skin-friction distribution.

其他文献

A High-order Gas-kinetic Scheme based on the Sub-cell Finite Volume method

Combined with the sub-cell finite volume method,a high-order gas-kinetic scheme is proposed on two-dimensional unstructured meshes by introducing the gas-kinetic Navier-Stokes flow solver.Different fr

会议

GKSSub-cell finite volume methodHigh-order accuracyUnstructured mesh

Block-Structured Quadrilateral Mesh Generation by Automatic Domain Partitioning

In comparison with triangular mesh,the structured quadrilateral mesh has higher solution accuracy and lower solution freedom,and thus it is preferred in the numerical simulation.In order to generate t

会议

Block-Structured MeshQuadrilateral meshDomain partitioningBoundary element me

Direct-numerical-simulation study of the helicity effects in compressible turbulence

We have performed the direct numerical simulations to examine the theoretic predictions on the helicity effects in statistical aerodynamics [Jian-Zhou Zhu,Isotropic polarization of compressible flows.

会议

compressible turbulencehelicitydirect numerical simulation

Numerical verification of “helicity(controlling)sound” theory

Motivated by Zhu,J.-Z.(2015)[Isotropic polarization of compressible flows.Journal of Fluid Mechanics,787,440–448],we numerically compare the sources of sound and farfield noise levels in the sense of

会议

aeroacousticsturbulent noisehelicitysound control

A wavelet-homotopy Approach for nonhomogeneous boundary value problem

Unlike other analytic method,Homotopy Analysis Method(HAM)has the freedom to choose function basis.Wavelets are modern functional basis presenting better properties which derives from Fourier analysis

会议

Computing methodwavelet-Galerkin MethodBoundary Value Problems

A parallel local remeshing algorithm for moving boundary problems

Moving boundary problems occur commonly in many important aerospace industry applications,and many simulation codes are developed to deal with them.Dynamic grid generation is an important module of th

会议

local remeshingparallel algorithmdomain decompositiongrid generationmoving b

Free Deformation of Ship Hullform and its Numerical Calculation Grid Self-adaption Method

Hull geometry modification and reconstruction,optimization algorithms and CFD techniques are combined together into what is known as Simulation-Based Design(SBD)technique,which has transformed the exp

会议

Hullform optimizationCFDHull geometry modification and reconstructionGrid sel

FLUENT numerical simulation of the Slant motion of the Special submersible

为了实现特殊艇型潜水器安全航行和高水平的作战能力，需要获取它的诸多水动力系数，预报它的操纵性能。本文以潜水器的斜航运动为例采用模型试验以及FLUENT 数值模拟2 种方法算得数据，对比结果得出结论：FLUENT 数值模拟结果具有较高的应用价值，可以用它们来校验特殊艇型斜航运动试验值的准确率。采用FLUENT 数值模拟可以节省时间降低成本值得广泛的应用与推广。

会议

FLUENT水动力系数仰俯运动操纵性

基于灵敏度分析的气动外形加工公差分配优化

由加工引起的气动外形偏差客观存在，对飞行器气动外形产生重要影响，导致飞行器气动性能将偏离设计值。高精度加工能够减小外形偏差，提高飞行器实际气动性能，但同时将导致加工成本的增加。如何合理地分配气动外形的加工公差，同时实现气动性能的提高和加工成本的降低，已成为工业界和学术界共同关心的问题。

会议

加工公差气动性能不确定性量化灵敏度分析伴随方法蒙特卡洛

A new coupling mesh-meshless Lagrange method

For the multi-material fluids with large deformations in compressible flows,we analyze the primary reason of mesh distortion in traditional mesh Lagrangian method.A new Lagrange approach coupling mesh

会议

Multi-material compressible flowsMeshlessLagrange methodFinite point method

Investigation of Effects of Synthetic Jets Flow Control on Drag Reduction by Means of Direct Numeric

其他学术论文