Effect Of Pooled and Flat Stepped Spillway on Energy Dissipation Using Computational Fluid Dynamics

Abstract

The goal of this research was to determine the impact of a pooled and flat stepped spillway on energy losses. FLOW3D, which is a computational fluid dynamics (CFD) program, with mesh size of 0.015 mm was used for this purpose. First, the code was tested against an available experimental model data for both water flow depth and inception point position. The outcome precisely shows agreement with the available laboratory work. Second, the energy dissipation and residual head of two different types of stepped spillways, flat and pool was computationally compared. The results show that in a pooled stepped spillway, energy dissipation is larger than in a flat step. In addition, the residual head reduces for pooled stepped chutes.

Investigate The Effects of Intake Air Temperature on The Performance and Emissions of The IC Engine Fuelled by Biodiesel B30

“…Biodiesel has a viscosity value that is 2 to 3 times that of diesel fuel, which affects bouquet configuration, break up, and diffusion. In terms of deplete gas emanations, CO, CO2, NOx, in addition smolder emanations reduced when compared to diesel fuel [7][8][9][10][11]. Gumus investigated experimentally the effect of different biodiesel blends (B5, B20, B50, and B100) on fuel injection pressures (18, 20, 22, and 24 MPa) in a naturally aspirated, single cylinder, air cooled, DI diesel engine, with a focus on BSFC and exhaust gas emissions [12][13][14][15][16].…”

“…When using biodiesel at higher injection pressure, CO, UHC, and smoke opacity were reduced, while CO2 beside to NOx emanations enlarged. The purpose of this article is to provide analytical data on the effects of inlet air temperature on IC performance and emissions when using B30 biodiesel at engine speeds of 1250 rpm, 1500 rpm, 1750 rpm and 2000 rpm at constant engine load [6][7][8][9][21][22][23][24][25][26].…”

Effect of LPG Emission on the Performance of Glass Bending Furnace

“…Increase in embracing of liquefied petroleum gas has resulted in development of different design of burner heads used in LPG glass furnaces in the industry and cook stoves. Laboratory analysis by Darweesh et al, [26], Abbas & Mushin [27], Durox et al, [28], Dhaher et al, [29], Saleh et al, [30], Santosa et al, [31], and Abulqasim et al, [32] were investigated on 16 conventional difference LPG burner heads to develop the emission inventories for LPG cook stoves and the study data used to calculate the effects of LPG cook stoves on air quality in the enclosed environment. The experimental study determined that selecting the right material of manufacture for burner is important for moderating air pollutants from combustion of LPG and enhance air quality greatly.…”