Results 241 to 250 of about 72,376 (294)

Effect of rib shape and fillet radius on thermal-hydrodynamic performance of microchannel heat sinks: A CFD study

, 2020
New designs for ribbed microchannels (semi-circular and semi-elliptic) and filleted ribs are numerically studied in the present paper. Four presented configurations include: microchannel with semi-circular ribs (MC-SCR), microchannel with semi-elliptic ...
K. Derakhshanpour, R. Kamali, M. Eslami
semanticscholar   +1 more source

Electroosmotic Flow in Microchannels

Journal of Colloid and Interface Science, 2001
The electroosmotic flow induced by an applied electrostatic potential field through microchannels between two parallel plates and a 90 degrees bend is analyzed in this work. A nonlinear, two-dimensional Poisson-Boltzmann equation governing the electrical double-layer field and the Laplace equation governing the electrostatic field distribution in ...
R.-J., Yang, L.-M., Fu, Y.-C., Lin
openaire   +2 more sources

Experimental investigation of flow boiling characteristics in microchannel with triangular cavities and rectangular fins

International Journal of Heat and Mass Transfer, 2020
Phase change heat transfer in micro heat sink was an effective method to solve the thermal issues of high heat flux micro devices. The geometric structure modification of the micro heat sink could enhance its heat transfer performance obviously.
Y. Li, G. Xia, D. Ma, J. Yang, W. Li
semanticscholar   +1 more source

An experimental investigation of the effect of multiple inlet restrictors on the heat transfer and pressure drop in a flow boiling microchannel heat sink

International Journal of Heat and Mass Transfer, 2020
Flow boiling instabilities inherent in microchannels / microgaps remain to be a serious issue in two-phase high-heat-flux cooling applications, as they cause significant oscillations in flow rate, temperature, pressure, reduction in heat transfer ...
Saad K. Oudah, R. Fang, Amitav Tikadar, A. S. Salman, J. Khan   +4 more
semanticscholar   +1 more source

Acoustophoresis in shallow microchannels

Journal of Colloid and Interface Science, 2010
Acoustophoretic (AP) motion of spherical polystyrene particles in a steady pressure driven flow is investigated in shallow microchannels, where the channel height is comparable to the particle diameter. Particle trajectories at different ultrasonic actuation amplitudes are extracted by a particle tracking algorithm.
Mehti, Koklu, Ahmet Can, Sabuncu, Ali, Beskok   +2 more
openaire   +2 more sources

Geometry parameters optimization for a microchannel heat sink with secondary flow channel

International Communications in Heat and Mass Transfer, 2019
Multi-objective optimization of geometry parameters of a microchannel heat sink with secondary flow channel was performed in this paper. The optimization objective is to minimize the thermal resistance and pumping power of the heat sink under constant ...
Xiaojun Shi, Shanshan Li, Yingjie Mu, Yin Bangtao   +3 more
semanticscholar   +1 more source

Structural design and performance research of methanol steam reforming microchannel for hydrogen production based on mixing effect

International journal of hydrogen energy, 2020
To improve hydrogen production performance of reforming, a plate-type microchannel carrier plate with a ridge structure was designed based on the mixing effect.
Xuyang Chu, Xiangheng Zeng, Tianqing Zheng, Weihuang Zhuang, Yifan Yang, W. Zhou, Yongqiang Hong   +6 more
semanticscholar   +1 more source

Robust autothermal microchannel reactors

Computers & Chemical Engineering, 2014
Abstract Autothermal microchannel reactors are intensified process units that bring significant energy efficiency benefits over their conventional counterparts. Efficiency gains are obtained, however, at the cost of operational challenges. These stem from the loss of control handles that is inherent to combining several unit operations in a single ...
Richard C. Pattison, Michael Baldea
openaire   +1 more source

Chaotic Mixer for Microchannels

Science, 2002
It is difficult to mix solutions in microchannels. Under typical operating conditions, flows in these channels are laminar—the spontaneous fluctuations of velocity that tend to homogenize fluids in turbulent flows are absent, and molecular diffusion across the channels is slow.
Abraham D, Stroock, Stephan K W, Dertinger, Armand, Ajdari, Igor, Mezic, Howard A, Stone, George M, Whitesides   +5 more
openaire   +2 more sources

A permeable-membrane microchannel heat sink made by additive manufacturing

International Journal of Heat and Mass Transfer, 2019
Microchannel heat sinks are capable of removing dense heat loads from high-power electronic devices with low thermal resistance, but suffer from high pressure drops due to the small channel dimensions.
Ivel L. Collins, J. Weibel, Liang Pan, S. Garimella   +3 more
semanticscholar   +1 more source