Results 21 to 30 of about 18,411 (197)

Performance Enhancement of Solar Air Heaters Using Triangular Channels [PDF]

E3S Web of Conferences
This paper provides a comparative numerical analysis of two solar air heater (SAH) designs: an improved design with internal triangular air flow channels (SAH 2) and a standard flat-plate duct design (SAH 1).
Marvar Sharafutdinova, Amina Musayeva, Zamira Jumayeva, Bahromjon Xalilov, Nigora Sodiqova, Lolaxon Raximova   +5 more
doaj   +1 more source

Turbulent channel flow perturbed by triangular ripples [PDF]

Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2018
This paper presents an experimental investigation of the perturbation of a turbulent closed-conduit flow by two-dimensional triangular ripples. Two ripple configurations were employed: one single asymmetric triangular ripple, and two consecutive asymmetric triangular ripples, all of them with the same geometry.
Fernando David Cúñez, Gabriel Victor Gomes de Oliveira, Erick de Moraes Franklin   +2 more
openaire   +2 more sources

MODELING OF HEAT EXCHANGE AT TURBULENT FLOW IN FLAT CHANNELS WITH SYMMETRIC TURBULIZERS ON BOTH PARTIES

Вестник Дагестанского государственного технического университета: Технические науки, 2019
Objectives. Mathematical modeling of heat transfer in flat channels with turbulators symmetrically located on both its sides, depending on the cross section of the turbulators.Methods.
I. E. Lobanov
doaj   +1 more source

NUMERICAL INVESTIGATION OF FLOW FIELD IN PROTON EXCHANGE MEMBRANE FUEL CELL AT DIFFERENT CHANNEL GEOMETRIES [PDF]

Journal of Engineering Science and Technology, 2018
This paper reports the three-dimensional modelling of a proton exchange membrane fuel cell (PEMFC) with straight flow field designs. Different shapes of both anode and cathode channels have been considered. Three geometrical configurations with same area:
R. HADJADJ, W. KAABAR
doaj  

Wetting considerations in capillary rise and imbibition in closed square tubes and open rectangular cross-section channels [PDF]

, 2013
The spontaneous capillary-driven filling of microchannels is important for a wide range of applications. These channels are often rectangular in cross-section, can be closed or open, and horizontal or vertically orientated.
Trabi, C, Newton, Michael, Ouali, Fouzia, Ouali, FF, Newton, MI, Javed, Haadi, Javed, H, Shirtcliffe, Neil, McHale, G, Shirtcliffe, NJ, McHale, Glen, Trabi, Christophe   +11 more
core   +1 more source

Simultaneous Triangular Waveform Signal and Microwave Signal Generation Based on Dual-Loop Optoelectronic Oscillator

IEEE Photonics Journal, 2016
A self-starting triangular waveform and microwave signal generator based on a dual-loop optoelectronic oscillator (OEO) is proposed. In this scheme, two continuous waves (CWs) with different wavelength are emitted from two laser diodes (LDs) to form two ...
Tingwei Wu, Yang Jiang, Chuang Ma, Zhenrong Jia, Guangfu Bai, Yuejiao Zi, Fengqin Huang   +6 more
doaj   +1 more source

Numerical simulation of nanofluids flow and heat transfer through isosceles triangular channels [PDF]

Journal of Particle Science and Technology, 2018
Nanofluids are stable suspensions of nanoparticles in conventional heat transfer fluids (base fluids) that exhibit better thermal characteristics compared to those of the base fluids. It is important to clarify various aspects of nanofluids behavior.
Mehri Hejri, Mohammad Hojjat, Seyed Gholamreza Etemad   +2 more
doaj   +1 more source

Analytical and experimental investigations of dam-break flows in triangular channels with wet-bed conditions [PDF]

, 2020
YesBased on the method of characteristics, an analytical solution for the one-dimensional shallow-water equations is developed to simulate the instantaneous dam-break flows propagating down a triangular wet bed channel in this study.
Zhang, F., Wang, B., Chen, Y., Liu, W., Liu, X., Yang, S., Zhang, J., Guo, Yakun, Peng, Y.   +8 more
core   +1 more source

Computational Fluid Dynamics-Enabled Modelling and Optimisation of Coolant Flow through Helical Channels [PDF]

, 2021
Computational Fluid Dynamics (CFD) is used to investigate the effect of geometry and flow parameters on liquid flow in helical channels for conditions relevant to coolant flow in twist drilling applications.
Merson, E., Jacklin, R., Hawley, S., Thompson, H.M.   +3 more
core   +1 more source

Investigating Heating Transfer and Turbulent Flow in a Channel for Different Cross Sections Full-Filled of Glass Spheres as a Porous Media

Al-Iraqia Journal for Scientific Engineering Research, 2023
 In recent years various modern improvements have been used to raise the performance of heat systems in various engineering and industrial applications. One of these improvements is the use of porous material.
Sarmad A. Ali , Suhad A. Rasheed
doaj