TY - GEN
T1 - 3-D numerical analysis for fluid flow and heat transfer in a micro chip by using an electrohydrodynamic micro-pump
AU - Lin, Chia Wen
AU - Jang, Jiin Yuh
PY - 2005/1/1
Y1 - 2005/1/1
N2 - A computational investigation of the heat transfer for a high performance integrated chip by using an electrohydrodynamic (EHD) pump was studied. This paper presents a fully computational system bundle with electro field, fluid flow and heat transfer for a cooling device. The micro pump provides the required pumping power by using the dipole moment generated from polarizing molecules and induces the flow to cool down the heat source. The computational domain of the micro channel for length and depth are kept in 1500μm and 500μm with parallel electrodes pitch (20μm, 40μm, 80μm). The effects of different applied voltage VE ranging from 100V to 500V, using oil as the working fluid and the heat flux of the heat source fixed at 2.5W/cm 2 is investigated in detail. It is found that the EHD micro pump is more effective for lower channel pitch and higher applied voltage. For V E = 500V and electrodes pitch = 20μm, this study identifies a maximum performance of 49.36kPa in the pressure head and 9.55W/cm2 in the heat transfer. In addition, the performance of flow rate, liquid velocity and averaging Nusselt number for the specific condition are 0.94 L/min-mm 2, 0.12 m/s, and 106.10. However, it also identifies the performance of the heat transfer for electrodes pitch = 40μm is about 146.0% of that for pitch = 80μm. But for pitch = 20μm, it is only 10.5% higher than that for pitch = 40μm.
AB - A computational investigation of the heat transfer for a high performance integrated chip by using an electrohydrodynamic (EHD) pump was studied. This paper presents a fully computational system bundle with electro field, fluid flow and heat transfer for a cooling device. The micro pump provides the required pumping power by using the dipole moment generated from polarizing molecules and induces the flow to cool down the heat source. The computational domain of the micro channel for length and depth are kept in 1500μm and 500μm with parallel electrodes pitch (20μm, 40μm, 80μm). The effects of different applied voltage VE ranging from 100V to 500V, using oil as the working fluid and the heat flux of the heat source fixed at 2.5W/cm 2 is investigated in detail. It is found that the EHD micro pump is more effective for lower channel pitch and higher applied voltage. For V E = 500V and electrodes pitch = 20μm, this study identifies a maximum performance of 49.36kPa in the pressure head and 9.55W/cm2 in the heat transfer. In addition, the performance of flow rate, liquid velocity and averaging Nusselt number for the specific condition are 0.94 L/min-mm 2, 0.12 m/s, and 106.10. However, it also identifies the performance of the heat transfer for electrodes pitch = 40μm is about 146.0% of that for pitch = 80μm. But for pitch = 20μm, it is only 10.5% higher than that for pitch = 40μm.
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U2 - 10.1115/icmm2005-75078
DO - 10.1115/icmm2005-75078
M3 - Conference contribution
AN - SCOPUS:27744477515
SN - 0791841855
SN - 9780791841853
T3 - Proceedings of the 3rd International Conference on Microchannels and Minichannels, 2005
SP - 215
EP - 221
BT - Proceedings of the 3rd International Conference on Microchannels and Minichannels, 2005
PB - American Society of Mechanical Engineers
T2 - 3rd International Conference on Microchannels and Minichannels, ICMM2005
Y2 - 13 June 2005 through 15 June 2005
ER -