Abdullah Karimi

Abdullah Karimi
Southland Industries · Advanced Simulation Center

MSME

About

16
Publications
6,560
Reads
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74
Citations
Citations since 2016
3 Research Items
54 Citations
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
Introduction
Simulation technology enthusiast. Passionately applying simulation and modeling tools for designing best products.
Additional affiliations
February 2015 - May 2016
Southland Industries
Position
  • Analyst
August 2010 - May 2013
Indiana University-Purdue University Indianapolis
Position
  • Research Assistant

Publications

Publications (16)
Conference Paper
Full-text available
Use of active chilled beams for cooling and heating applications has drawn significant interests in North America in recent years due to its benefits such as easier integration with ceiling, lower air-flow, less ductwork and lower cost. The optimal performance of active chilled beams is dependent on many factors such as its placement, primary suppl...
Conference Paper
Full-text available
Radiant systems are increasingly being used for heating and cooling spaces due to its benefits like better energy efficiency, improved thermal comfort and IAQ. In addition, the radiant systems reduce the ductwork and are aesthetically pleasing. However, the effectiveness of radiant systems for optimal design need detailed study of impact of several...
Article
Full-text available
Ignition of a combustible mixture by a transient jet of hot reactive gas is important for safety of mines, prechamber ignition in IC engines, detonation initiation, and novel constant-volume combustors. The present work is a numerical study of the hot jet ignition process in a long constant-volume combustor (CVC) that represents a wave rotor channe...
Article
Full-text available
Hot-jet ignition of a combustible mixture has application in internal combustion engines, detonation initiation, and wave rotor combustion. Numerical predictions are made for ignition of combustible mixtures using a traversing jet of chemically active gas at one end of a long constant-volume combustor (CVC) with an aspect ratio similar to a wave ro...
Conference Paper
Full-text available
A jet of hot gas can serve as an ignition source in combustion devices, such as automotive engines, pulsed detonation engines and wave rotor combustors. Hot-jet ignition involves complex flow phenomena such as vortex evolution, fluid mixing, and turbulence generation. Further, the penetrating and distributed nature of ignition can be affected by mi...
Conference Paper
Full-text available
A constant-volume combustor is used to investigate ignition by a traversing jet of reactive hot gas, in support of combustion engine applications that include novel constant-volume wave rotor, combustion gas turbines and pre-chamber IC engines. The combustor rig consists of two combustion chambers: a rotating pre-chamber that issues a traversing ho...
Conference Paper
Full-text available
A jet of hot reactive gas can reliably ignite premixed gases in combustion engines. The presence of chemically active species in the hot jet may influence the time delay and ignitability limits for ignition of a combustible mixture. Rapid ignition and combustion may also involve complex interactions of pressure waves with flames in the transient je...
Conference Paper
Hot-jet ignition of a combustible mixture has application in IC engines, detonation initiation, and wave rotor combustion. Numerical predictions are made for ignition of combustible mixtures using a traversing jet of chemically active gas at one end of a long constant-volume combustor (CVC) with aspect ratio similar to a wave rotor channel. The CVC...
Conference Paper
A wave-rotor pressure-gain combustor (WRPGC) ideally provides constant-volume combustion and enables a gas turbine engine to operate on the Humphrey-Atkinson cycle. It exploits pressure (both compression and expansion) waves and confined propagating combustion to achieve pressure rise inside the combustor. This study first presents thermodynamic cy...
Conference Paper
Flow separation and reattachment of turbulent flows have practical implications in many devices like diffusers, combustors, airfoils. Flow over a backward-facing step (BFS) is a configuration that is often studied to understand the physical behavior of separated flows. Combustors and afterburners in ramjet and scramjet engines are designed to use B...
Conference Paper
Full-text available
This paper investigates the role of Damkohler number and reduced reaction kinetics in modeling a turbulent co-axial methane diffusion flame in a cylindrical combustor. The standard k-ε model and combustion models with finite-rate chemistry have been employed for the simulations. A one-step global reaction mechanism and several multi-step reaction m...
Conference Paper
In this paper we investigate the exergy destruction or power loss due to irreversible losses using a novel approach which modifies the classical Gouy-Stodola law. The modified law has been applied for a practical power plant. Results show significant variation in power loss when the working temperature is not near ambient temperature and thus conce...
Article
Full-text available
The flow of blood through stenosed artery has drawn considerable research attention in past decades due to its role in atherosclerosis. This work investigates the blood flow in stenosed artery considering different shapes of stenosis and incorporating different types of Non-Newtonian fluids represented by Herschel-Bulkley model. The simplifying ass...

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