APPLICATION OF LATTICE BOLTZMANN METHOD FOR SIMULATING MGD IN A MICROCHANNEL UNDER MAGNETIC FIELD EFFECTS

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RAHMATI AHMAD REZA; KHORASANIZADEH HOSSEIN; ARABYARMOHAMMADI MOHAMMAD REZA

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:7 Page(s): 229-240

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Title

APPLICATION OF LATTICE BOLTZMANN METHOD FOR SIMULATING MGD IN A MICROCHANNEL UNDER MAGNETIC FIELD EFFECTS

Author(s)

RAHMATI AHMAD REZA | KHORASANIZADEH HOSSEIN | ARABYARMOHAMMADI MOHAMMAD REZA | Issue Writer Certificate

Keywords

LATTICE BOLTZMANN METHODQ1

MICROCHANNELQ1

MGDQ1

LORENTZ FORCEQ1

SLIP VELOCITYQ2

Abstract

In this paper, magnetogasdynamics with outlet Knudsen of 0.2 is studied in a pressure-driven micro channel. By using a developed code, the effects of changing magnetic field parameters including power and length with implementation of SLIP VELOCITY at the walls have been simulated numerically. The geometry is a two dimensional planar channel having a constant width throughout. The flow is assumed to be laminar and steady in time. In order to analyze the variation of velocity, pressure, LORENTZ FORCE and induction magnetic field, the governing equations for flow and magnetic fields have been solved simultaneously using the lattice Boltzmann. No assumption of being constant for parameters like Knudsen and volumetric forces is made. Another feature of this research is to improve the quantity of results, which is a major problem in this method and many studies have been done in this area. This study presents the results which have more quantitative agreement with that of analytical relations by using a second order accuracy for calculation of SLIP VELOCITY and correction of pressure deviation curve in comparison with the past studies if a proper relaxation time is determined. The simulation results show a change in Fx profile to M if the length of external magnetic field length reduces to 40% of the whole. Removing applied magnetic field from both ends of the channel will increase pressure gradient at the intermediate part and displace the section at which the maximum pressure deviation occurs. SLIP VELOCITY and centerline velocity behave differently for the reduced magnetic field length.

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APA: Copy

RAHMATI, AHMAD REZA, KHORASANIZADEH, HOSSEIN, & ARABYARMOHAMMADI, MOHAMMAD REZA. (2016). APPLICATION OF LATTICE BOLTZMANN METHOD FOR SIMULATING MGD IN A MICROCHANNEL UNDER MAGNETIC FIELD EFFECTS. MODARES MECHANICAL ENGINEERING, 16(7), 229-240. SID. https://sid.ir/paper/178328/en

Vancouver: Copy

RAHMATI AHMAD REZA, KHORASANIZADEH HOSSEIN, ARABYARMOHAMMADI MOHAMMAD REZA. APPLICATION OF LATTICE BOLTZMANN METHOD FOR SIMULATING MGD IN A MICROCHANNEL UNDER MAGNETIC FIELD EFFECTS. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(7):229-240. Available from: https://sid.ir/paper/178328/en

IEEE: Copy

AHMAD REZA RAHMATI, HOSSEIN KHORASANIZADEH, and MOHAMMAD REZA ARABYARMOHAMMADI, “APPLICATION OF LATTICE BOLTZMANN METHOD FOR SIMULATING MGD IN A MICROCHANNEL UNDER MAGNETIC FIELD EFFECTS,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 7, pp. 229–240, 2016, [Online]. Available: https://sid.ir/paper/178328/en

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