Transient analysis of magnetohydrodynamic seawater thrusters with decaying magnetic field

Haghparast, Mortaza

doi:10.1080/17445302.2016.1187844

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…In addition, the pump can operate at very high temperatures and demonstrate high efficiencies. They have been successfully used for a range of applications, including seawater thrusters for ship propulsion [18][19][20], liquid metal stirring and shaping for industrial applications [21][22][23], molten salt pumping in nuclear reactors cooling [24,25], blood pumping [26], sample propelling [27] etc.…”

Section: B Mhd Pump Cooling Applicationsmentioning

confidence: 99%

Thermal Management System for Press-Pack IGBT Based on Liquid Metal Coolant

Yerasimou

Pickert

Dai

et al. 2020

IEEE Trans. Compon., Packag. Manufact. Technol.

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The press-pack packaging technology has been adopted in recent years for insulated-gate bipolar transistors (IGBTs) to be utilized in high voltage -high current applications, such as high-voltage direct current (HVDC) electric power transmission. Traditionally, the heat management of such systems is based on water coolant, however, there are numerous challenges associated with that method, such as the requirement to deionize the water to prevent electrical potentials and inherent problems of corrosion and leakage in the cooling piping structure. This paper presents the design and development of a liquid metal heat sink for press-pack IGBTs. The use of a thermal management system based on liquid metal increases the heat dissipation capability without corroding the cooling structure. Analytical work is performed on the design of the heat sink. Moreover, the thermal performance of the heat sink is experimentally validated against a commercial water-based cooling system. The presented results show that the cooling performance of the liquid metal system is increased, whereas the shortcomings of the water-based system are eliminated. Index Terms-Press-pack insulated-gate bipolar transistor (IGBT) power module cooling, junction temperature, liquid metal cooling, magnetohydrodynamic (MHD) pump, high-voltage direct current (HVDC) cooling.

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Section: B Mhd Pump Cooling Applicationsmentioning

confidence: 99%

Thermal Management System for Press-Pack IGBT Based on Liquid Metal Coolant

Yerasimou

Pickert

Dai

et al. 2020

IEEE Trans. Compon., Packag. Manufact. Technol.

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“…Magnetohydrodynamics (MHD) mainly studies the behaviour of electrically conducting fluids in electromagnetic fields. Several applications are based on the MHD concept, such as electromagnetic pumping of molten metals [1], MHD power generation [2,3], and MHD propulsion [4]. MHD propulsion is the idea of accelerating a conductive fluid using the Lorentz force which is the basis of all electromagnetic propulsion systems [5,6].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the effects of magnetic field and fluid electrical conductivity on the performance of marine magnetohydrodynamic motors

Haghparast

Pahlavani

Azizi

2018

IET Electric Power Applications

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A magnetohydrodynamic (MHD) thruster is a type of electric motors which does not have mechanical moving parts and directly converts electrical energy into mechanical energy. In this study, the effect of magnetic field intensity and seawater electrical conductivity on the performance of a marine MHD thruster model is investigated using fully three-dimensional numerical simulations. For the first time, all electric, magnetic and fluid flow fields are considered in three dimensions. The effects of seawater electrolysis and end loss are taken into account in all simulations and a simple analytical model is developed to verify the numerical results. It is shown that increasing the magnetic field intensity or the electrical conductivity of the working fluid decreases the electrochemical and ohmic losses of the thruster at a specific velocity. Therefore, a higher efficiency can be achieved at higher magnetic field strengths and higher seawater electrical conductivities. Also, it is revealed the end loss of the channel increases with an increase in the electrical conductivity of the working fluid and decreases with an increase in the magnetic field intensity.

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