EXPERIMENTAL STUDY ON GENERATION AND DISSIPATION MECHAMISIMS OF TURBULENCE INCIDE AND IN THE VICINITY OF POROUS MEDIA

Autor:	Takaaki Shigematsu, Kousei Takehara, Jun-ichi Shiotari, Tamotsu Takano, Kazuki Oda
Rok vydání:	2003
Předmět:	Physics business.industry Turbulence Organic Chemistry Flow (psychology) Physics::Optics Mechanics Kinematics Dissipation Biochemistry Physics::Fluid Dynamics Optics SPHERES Vector field business Porous medium Refractive index
Zdroj:	PROCEEDINGS OF HYDRAULIC ENGINEERING. 47:787-792
ISSN:	1884-9172 0916-7374
Popis:	A measuring method of fluid motion inside and in the vicinity of porous media made of silicon spheres is presented. Sodium iodide solution is used as the refraction index matching fluid. In order to capture pictures, a CCD camera and YAG laser are used. The velocity datum are obtained by analyzing the pictures using the superresolution PIV method. Some experimental results on the velocity field and turbulence kinematic energy are presented. Structure of the flow filed inside and in the vicinity of the porous media is discussed. Moreover generation and dissipation mechanisms of the turbulence are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e70d3a8dbea411c97abd3e777379905 https://doi.org/10.2208/prohe.47.787 Zobrazit plný text záznamu