Boundary Measurement for Axisymmetric Blunt Base Body by Numerical and Experimental Methods

EasyChair Preprint 7103

Abstract

Boundary layer is known as a small layer around the moving object where velocity changes from zero to free-stream velocity. The layer is significant thin, which made difficult for measurement. In this study, we presented an advantage technique for measurement boundary layer of axisymmetric moving vehicles. The experiments were conducted by particle image velocimetry method to obtain the initial image data. Then, single-pixel resolution ensemble algorithm was applied to obtain boundary profile near the surface. We also conducted numerical simulation examine the ability of different turbulent model in extract velocity and boundary layer around the surface. The results indicated that the experimental method allows detailed boundary layer on the surface. Additionally, simulation shows close results to the experiments. The experimental technique is, then, can be applied for measure velocity close to the surface of moving objects such as unmanned aerial vehicle, car model. The results will help us understand flow around models in order to increase their performance as well as saving energy.

Keyphrases: boundary layer, image processing, numerical simulation

@booklet{EasyChair:7103,
  author    = {The Hung Tran and Dinh Anh Le and Trang Minh Nguyen and Cong Truong Dao},
  title     = {Boundary Measurement for Axisymmetric Blunt Base Body by Numerical and Experimental Methods},
  howpublished = {EasyChair Preprint 7103},
  year      = {EasyChair, 2021}}