Results 141 to 150 of about 3,852 (197)

Generation of a 28 GHz annular power distribution with high power gyrotron and its application to microwave driven in tube accelerator. [PDF]

Sci Rep
Takahashi M, Yamada T, Minami R, Kariya T, Shimamura K.   +4 more
europepmc   +1 more source

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Helical tube-in-tube heat exchanger with corrugated inner tube and corrugated outer tube; experimental and numerical study

International Journal of Thermal Sciences, 2021
Abstract Single helical tube has been widely investigated in both smooth wall and corrugated wall structures. However, for the first time, this paper proposes and works on a helical tube-in-tube heat exchanger in which both inner tube and outer tube are corrugated (see graphical abstract for possible interesting configurations).
Hamdi Ayed, Ali E Anqi, Hamed Sadighi Dizaji   +2 more
exaly   +2 more sources

Experimental exergy analysis for shell and tube heat exchanger made of corrugated shell and corrugated tube

Experimental Thermal and Fluid Science, 2017
Abstract Corrugated shell and corrugated tube were employed instead of smooth shell and smooth tube through a shell and tube heat exchanger in this paper. Distinct arrangements of concave and convex type of corrugated tubes were investigated. Exergy loss due to simultaneous employing of corrugated tubes as the inner and outer tube (shell) of a shell ...
Hamed Sadighi Dizaji, Samad Jafarmadar, Soheil Asaadi   +2 more
exaly   +2 more sources

Sound generation in corrugated tubes

Fluid Dynamics Research, 1991
A corrugated tube open at both ends, with air flowing through it, emits sounds whose frequencies depend on the flow velocity and the length of the tube. The sounds it emits are the natural harmonics of the tube. Wind-tunnel experiments show that the sounds are excited by the impinging-shear-layer instability that occurs in the flow over the ...
Y Nakamura, N Fukamachi
openaire   +1 more source

Flow Induced Pulsations Caused by Corrugated Tubes

Volume 4: Fluid-Structure Interaction, 2007
Corrugated tubes can produce a tonal noise when used for gas transport, for instance in the case of flexible risers. The whistling sound is generated by shear layer instability due to the boundary layer separation at each corrugation. This whistling is examined by investigating the frequency, amplitude and onset of the pulsations generated by 2 ...
Shatto, D.P., Belfroid, S.P.C., Peters, M.C.A.M.   +2 more
openaire   +2 more sources

HEAT TRANSFER ENHANCEMENT IN A CORRUGATED TUBE

International Communications in Heat and Mass Transfer, 2002
Experimental results of heat transfer and pressure drop in a corrugated tube, used in chemical and food industry, are presented, for single-phase flow at moderate Reynolds numbers ...
BARBA A., RAINIERI, Sara, SPIGA, Marco
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Singing Mitigation in Corrugated Tubes With Liquid Injection

Volume 4: Fluid-Structure Interaction, 2013
Pipes with a corrugated inner surface, as used in flexible pipes for gas production and transport, can generate a high amplitude tonal sound (singing). Small quantities of liquid can result in a significant amplitude reduction or total mitigation of this sound production.
Belfroid, S.P.C., Golliard, J., Vijlbrief, O.   +2 more
openaire   +2 more sources

Prediction of Deflection for Corrugated Plastic Tubing

Transactions of the ASAE, 1979
ABSTRACT MEASURED deflections of tubing buried for five years in a silty clay (CL) showed that the soil pro-vides minimal side support against deflection. The Iowa formula was the best of four methods for predicting deflection but all methods generally underestimated measured deflections. Maximum installation depths were calculated for tubing up to 381
null A. D. Fenemor, null B. R. Bevier, null G. O. Schwab   +2 more
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