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در حال نمایش موارد 1 - 8 از 8
Investigation of Heat Transfer Parameters of a Bundle of Heaters in a Simple Bubble Column Reactor Using CFD Method
(University of Tehran, 2015-06-01)
Bubble columns are gas- liquid contactors that are widely used in chemical and bio- chemical industries. High mixing that result in high heat and mass transfer rates are amongst their advantages. Heat transfer in a bubble ...
Absolute Permeability Calculation by Direct Numerical Simulation in Porous Media
(University of Tehran, 2019-06-01)
Simulating fluid flow at micro level is an ongoing problem. Simplified macroscopic flow models like Darcy's law is unable to estimate fluid dynamic properties of porous media. The digital sample reconstruction by high ...
Numerical Modeling of Micromixing Performance of Five Generic Microchannel Reactors using Villermaux/Dushman Competing Test Reaction
(University of Tehran, 2022-12-01)
Microchannel reactors, known as high-process intensification reactors, are utilized in various fields due to their intensive micromixing performance, which is crucial for fast chemical reactions. The work presented here ...
Effect of Inlet Downcomer on the Hydrodynamic Parameters of Sieve Trays Using CFD Analysis
(University of Tehran, 2011-06-01)
Nowadays distillation is recognized as one of the economical and the most trustable separation methods in chemical, petroleum, gas and petrochemical industries. It is almost used as a first and the most applicable choice ...
CFD Simulation of Concap Tray Hydrodynamics
(University of Tehran, 2013-06-01)
This research includes both experimental and CFD investigation in the hydrodynamic behavior of a new type of column tray introduced as “Concap" tray. The proposed column tray is used in contactor columns especially in ...
Hydrodynamics of Sieve Tray Distillation Column Using CFD Simulation
(University of Tehran, 2015-12-01)
Sieve trays are widely used in the gas- liquid contactors such as distillation and absorption towers. In this article, a three-dimensional, two phase CFD model using Euler-Euler framework was developed to simulate a ...
Investigation of the Local Nusselt Number of the Symmetrical Liquid-Liquid Jets Emitting from a Nozzle
(University of Tehran, 2011-04-01)
The aim of this paper is to study the local Nusselt number of the symmetrical liquid-liquid jets emitting from a nozzle. Equations obtained from theoretical works are arranged in the form of a computerized model. The ...
Influence of Nozzle Numbers on Analysis of Air- Water Flow in a Rotating Packed Bed with Computational Fluid Dynamics
(University of Tehran, 2023-12-01)
Nowadays, rotating packed beds (RPBs) have been adopted in the many chemical processes such as absorption, desorption, distillation, and etc. Due to the complex structure of RPBs, Computational Fluid Dynamic (CFD) is adopted ...