Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research
Date (from‐to) : 2016/04 -2019/03
Author : Kobayashi Tomohiro; Sandberg Mats; Fujita Takuya; Domoto Hiroki
This research deals with a problem that the conventional prediction method of wind-induced natural ventilation rate cannot work well for a case with small wind pressure coefficient (Cp value) difference. To propose simplified prediction method of the flow rate, the wind tunnel test was first performed to obtain true value which is to be compared with numerical result. The main work was carried out by CFD using Large Eddy Simulation (LES). By changing the location of the openings, i.e., Cp value difference, a parametric study was conducted. A simplified prediction method of the flow rate was finally proposed by evaluating 3 important parameter, 1) mean Cp value difference, 2) standard deviation of Cp value difference, and 3) velocity in the vicinity of the opening.