نتایج جستجو برای: turbulency

تعداد نتایج: 10  

2013
Baharak Sajjadi Mostafa Keshavarz

Investigation of turbulency on the rate of induced liquid circulation, gas hold-up, mixing time and overall gas–liquid volumetric oxygen mass transfer coefficient. The various types of surfactants (containing Brij58, TritonX-405, Tween40, HCTBr) with various concentrations of 1-5 ppm were examined on the operational characteristics of the reactor. In surfactant solutions (in comparison with pur...

Journal: :Odessa National University Herald. Economy 2020

Journal: :International journal of engineering. Transactions C: Aspects 2021

Removing of arsenic and antimony from electrolyte copper electrorefining plant by cooling treatment is the subject current study. In this regards, temperature various samples reduce to 5, 10, 15 20 °C hold at different times without any turbulency. Experimental results reveal that decreasing electrolyte, facilitate deposition As Sb in form AsO5Sb, AsO4Sb As2O3 as white precipitate a critical ti...

2016
Pedram Tehrani

The purpose of this study is to investigate the behavior of red blood cells in order to pass through capillaries. In this research, the behavior of a single and multiple red blood cells are numerically investigated using a fluid-structure interaction (FSI) method. For calculations and comparisons of the deformation, displacements and stresses, four object points were selected and two different ...

Journal: :Processes 2022

Inhalation therapy involving a pressurized metered-dose inhaler (pMDI) is one of the most commonly used and effective treatment methods for patients with asthma. The purpose this study was to develop computational fluid dynamics (CFD) model characterize aerosol flow issued from pMDI into simulated mouth–throat geometry. effects air rate cone angle were analyzed in detail. behaviour multiphase i...

Journal: :Case Studies in Thermal Engineering 2021

The present study was numerically inquired the heat transfer performance and fluid flow characteristic of a helical micro double-tube exchanger (HMDTHX) using finite volume method. tube length considered to be constantly equal 30 mm, 12 different configurations were modeled by changing in turn number pitch (P) for Reynolds numbers 50, 100, 150, 200. findings indicated that would enhance applyin...

Journal: :مهندسی عمران فردوسی 0
مهدی اژدری مقدم مهنا تاج نسایی محمد گسوه چی

channel flows have three components of velocity, 1component in flow direction and 2components in spanwise of channel. because of heterogeneity of velocity undulations, in the channel section the vortices are formed that are nominated “secondary current cells”. these cells cause the lateral shear stress in the channel walls and introduce the erosion and scour of the channel walls. heterogeneity ...

In this manuscript, the experimental setup was designed and fabricated for optimizing the parameters of a catalytic converter of INDICA V2 exhaust system. Three turbulence intensify devices, namely Swirl Venturi, Swirl Blades and Swirl Contour, were close-fitted before the catalytic converter. The heating element is embedded in its body and thermocouples are used for knowing the performance at ...

Journal: :مهندسی مکانیک مدرس 0
قنبرعلی شیخ زاده هیات علمی علیرضا آقایی دانشجوی دکترا نرگس احمدی دانشجوی کارشناسی

0

2012
Baharak Sajjadi A. R. Abdul Aziz Shaliza Ibrahim

The liquid-gas operations in the stirred vessels can be a complex system to analyze because of the presence numerous parameters and operational conditions that effect its performance. Since the past decades, CFD analysis is gaining popularity and even replacing the need for extensive experimentation. The objective of this review is to establish the approaches and equations commonly used in CFD ...

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