A Simple Immersed Boundary Method for Compressible Flow Simulation around a Stationary and Moving Sphere

Yusuke Mizuno; Shun Takahashi; Taku Nonomura; Takayuki Nagata; Kota Fukuda

doi:10.1155/2015/438086

A Simple Immersed Boundary Method for Compressible Flow Simulation around a Stationary and Moving Sphere

Yusuke Mizuno, Shun Takahashi, Taku Nonomura, Takayuki Nagata, Kota Fukuda

ENG - Aerospace Engineering

Tokai University

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

This study is devoted to investigating a flow around a stationary or moving sphere by using direct numerical simulation with immersed boundary method (IBM) for the three-dimensional compressible Navier-Stokes equations. A hybrid scheme developed to solve both shocks and turbulent flows is employed to solve the flow around a sphere in the equally spaced Cartesian mesh. Drag coefficients of the spheres are compared with reliable values obtained from highly accurate boundary-fitted coordinate (BFC) flow solver to clarify the applicability of the present method. As a result, good agreement was obtained between the present results and those from the BFC flow solver. Moreover, the effectiveness of the hybrid scheme was demonstrated to capture the wake structure of a sphere. Both advantages and disadvantages of the simple IBM were investigated in detail.

Original language	English
Article number	438086
Journal	Mathematical Problems in Engineering
Volume	2015
DOIs	https://doi.org/10.1155/2015/438086
Publication status	Published - 2015

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A Simple Immersed Boundary Method for Compressible Flow Simulation around a Stationary and Moving Sphere

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