نتایج جستجو برای: different flow rate
تعداد نتایج: 2910400 فیلتر نتایج به سال:
in this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. to analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. because of nonlinearity and coupling, these equations are solved using numerical methods and the results are ...
the aim of this manuscript is to study the implication of aluminium-oxide nanofluid for an amphibious vehicle engine (viable on land and under water) cooling system both analytically and experimentally. to achieve this, a one-dimensional model of the engine cooling system (radiator) is considered through a computational fluid code in which the mass flow rate for a range of the coolant temperatu...
In this paper, overall heat transfer coefficient and friction factor of water based γ-Al2O3 nanofluid in a double tube counter flow heat exchanger have been measured experimentally under turbulent flow condition. For better dispersion of γ-Al2O3 nanoparticles in distilled water, magnetic stirrer and ultrasonic vibrator (with a power of 240 kW and frequency of 35 kHz) were implemented. The stabi...
conclusions instillation of ropivacaine 0.2% (30 ml) within tubeless pcnl surgery does not have a significant effect on postoperative pain relief and improvement of pef within 6 hours after the operation. results we found no difference in the mean pain severity score between the case and control groups 4 hours (p = 0.332) and 6 hours (p = 0.830) after the operation. the mean pef at baseline was...
Performance of the Tube Settler Clarification at Different Inclination Angles and Variable Flow Rate
The potential bioconversion of synthesis gas (syngas) to fuels and chemicals by microbial cell has attracted considerable attention in past decade. The feasibility of enhancing syngas bioconversion to ethanol and acetate using Clostridium ljungdahlii in a continuous tank bioreactor (CSTBR), kinetics and mass transfer coefficient of carbon monoxide (CO) utilization were evaluated. Two different ...
Waxes have a lot of applications in dentistry. Such materials are of thermoplastic type that undergoes deformation in different temperatures. Two important properties of base plate waxes are flow and their coefficient of linear thermal expansion. Recently, different institutions, inside the country, produce dentistry waxes, while they have not been standardized. Consequently, consumers' dissati...
BACKGROUND AND AIM: Hyposalivation can cause many difficulties for patients like opportunistic infections such as candidiasis, mouth sores, and dysphagia as well as reduced quality of life (QOL). Methods such as using sugar-free chewing gum are recommended to treat this complication. Mastic is a natural substance and since it has various properties in addition ...
This investigation evaluates the first and second laws of thermodynamics for a flat plate sheet and tube based solar collector located in Abu-Musa Island (in Persian Gulf) in Hormozgan province, Iran where a suspension of molybdenum disulfide (MoS2) nanoparticles with different shapes in water is the working fluid. The main aim of this study is to analyze morphology effects of MoS2 nanoparticle...
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