The objective of this research was to find the diffusion properties of vehicles on the road by using the V-Sphere Code. The diffusion coefficient and the size of the height of the wake were estimated with the LES option and the third order MUSCL scheme. We evaluated the code with the changes in the moments of Reynolds Stress along the mean streamline. The results show that at the leading part o...

Truth-telling behavior in university students (n=38) was examined using a simple stylized poker experiment. Four treatments were applied that changed either card probabilities or payoff structure. Results indicated that in some cases the students’ behavior conformed closely to theoretical predictions. However, other cases indicated robust inconsistencies between observed behavior and mixed-stra...

In this project, linear feedback control is used to modify the dynamics of fluid flows. We focus on two system identification and controller design strategies that target separated wakes behind bluff bodies. In particular, we aim to reduce the form drag and suppress the large fluctuations that typically develop in such wakes and are detrimental to efficiency and safety in a large number of indu...

Abstract In this paper, various bluff-body shapes (cylindrical, square, star) and two different surface topologies (smooth, wavy) are applied as passive tools for controlling a non-premixed hydrogen flame in combustion chamber. We focus on the dynamics of its time-averaged characteristics close vicinity an injection system within formed recirculation zones also far-field. The research is perfor...

A short series of experiments was conducted with the aim of assessing the possible effect of tunnel blockage on spanwise correlation lengths measured in the near-wake of a circular cylinder. The results indicate that increasing blockage acts to increase spanwise correlation. This finding has important implications for the conduct and reporting of both physical and numerical experiments on bluff...

Surface dielectric barrier discharges (DBDs) are used to delay flow separation behind a bluff body in atmospheric pressure air. The bluff body is made by connecting a flat plate to a half cylinder tangentially as a round-cornered trailing edge. Four DBD plasma actuators are attached along the surface of the half cylinder. Particle Image Velocimetry (PIV) is utilized for studying the velocity fi...

اساس سیستم‌های تصویربرداری ایکس پس­پراکنده، پرتوهای بازگشتی هستند که در صنعت و بازرسی دارای کاربرد‌های بسیاری می‌باشند. این تصاویر برخلاف روش عبوری، مواد آلی با عدد اتمی پایین مانند مخدر منفجره پراکندگی فوتون بالا، واضح‌تر دیده می‌شوند. به علت چندگانه فوتونی معمولاً مات­شدگی دارند. پردازش خروجی می‌تواند بهبود کنتراست تشخیص کمک کند. تحقیق از وردش برای استفاده شده پرتونگاره‌های فانتوم‌هایی ارزیابی...