Results 261 to 270 of about 2,559 (287)

Aerated flow characteristics of skimming flow over stepped chutes

Journal of Hydraulic Research, 2013
By MASAYUKI TAKAHASHI and IWAO OHTSU, J. Hydraulic Res. 50(4), 2012, 427–434The discussers read the paper with interest and congratulate the authors for their remarkable contribution.
Boes, Robert M., Lucas, Jill, Hager, Willi H.   +2 more
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Developing flow in skimming flow regime on embankment stepped spillways

Journal of Hydraulic Research, 2012
By DANIEL B. BUNG, Journal of Hydraulic Research, Vol. 49, No. 5 (2011), pp. 639–648 The author investigated the air concentration, the aerated flow velocity, and the flow depth in the developing f...
Masayuki Takahashi, Iwao Ohtsu
openaire   +1 more source

Hydraulics of Skimming Flow on Modeled Stepped Spillways

Journal of Hydraulic Engineering, 2000
Two sets of models of stepped spillways of slope 1 upon 0.6 with the same crest-shape and with a range of step sizes (0.25–2.0 m on the 1:10 scale and 0.5–2.0 m on the 1:20 scale models) were built and studied. In the range of prototype unit flows considered (0.8–3.8 m2/s on the 1:10 scale models and 1.8–21.7 m2/s on the 1:20 models), the residual ...
Boes, Robert M., Matos, Jorge, Ohtsu, I., Yasuda, Y., Takahashi, M., Tatewar, S. P., Ingle, R. N., Porey, P. D., Pegram, Geoffrey G. S., Officer, Andrew K., Mottram, Samuel R.   +10 more
openaire   +2 more sources

Flow Resistance in Skimming Flows and its Modelling [PDF]

, 2002
Dams and weirs must be equipped with adequate flood release facilities for a safe dissipation of the kinetic energy of the flow. With stepped spillway design, it is essential to predict accurately the flow resistance associated with the steps. The authors investigate the flow resistance of skimming flows and associated form losses.
Chanson, Hubert, Yasuda, Youichi, Ohtsu, Iwao   +2 more
openaire   +2 more sources

Characteristics of Skimming Flow over Stepped Spillways

Journal of Hydraulic Engineering, 1999
The discusser wishes to congratulate the authors for their authoritative paper. He believes that the work is a necessary addition to the topic of stepped spillway flow. The paper presents a true systematic study of skimming flow. Despite the outstanding insights of the study, the discusser wishes to point two weaknesses: an inadequate analysis of the ...
M. R. Chamani, N. Rajaratnam
openaire   +1 more source

Developing flow in skimming flow regime on embankment stepped spillways

Journal of Hydraulic Research, 2011
In hydraulic engineering, stepped spillways are effective structures in regard to both energy dissipation and re-aeration processes. It is well known that flow depths and flow velocities generally depend on the spillway geometry in terms of slope and step-induced macro-roughness height on the one hand and the discharge on the other hand.
openaire   +1 more source

Flow properties of freeze-concentrated skim milk

Journal of Food Engineering, 1997
Abstract The flow properties of freeze-concentrated skim milk, determined with a concentric cylinder viscometer, were well described by the simple power-law rheological model over the temperature range from — 3.4 to + 20 °C. High-total-solids freeze-concentrated skim milk (35–40% total solids) exhibited non-Newtonian behaviour, while lower ...
Yi-Huang Chang, Richard W. Hartel
openaire   +1 more source

OIL LAYER FLOW AROUND SKIMMING VESSELS

International Oil Spill Conference Proceedings, 1989
ABSTRACT The flow of an oil layer around an advancing skimming vessel was investigated theoretically on the following assumptions: (1) the oil layer is so thin that the velocity distribution is uniform over the depth; (2) there is no shear and tension at the oil-water interface; and (3) the density difference between oil and water is so ...
Isao Suzuki, Ryo Tasaki, Kkenjiro Miki, Etsuji Kajita, Takanobu Yagi   +4 more
openaire   +1 more source

Study on the Flow Behavior in the Low Flow Region of Skim Milk Solutions [PDF]

広島大学生物生産学部紀要, 1980
The flow equations of liquid foods are important for the designing and controlling of various apparatuses. In this paper, we studied the flow behavior of skim milk solutions under low concentration at various temperatures. For measuring the flow behavior, we used a capillary tube viscometer operated under various pressures.
Kubota, Kiyoshi, Matsumoto, Toshiya, Suzuki, Kanichi, Hosaka, Hideaki   +3 more
openaire   +2 more sources

Flow Characteristics of Skimming Flows in Stepped Channels

2006
Ohtsu et al. must be congratulated for their systematic study of skimming flows on stepped channels with different slopes and step heights. Their experimental data provide a solid database that might lead to better and improved design criteria. Important outcomes include some estimate of friction factors for skimming flows and a design flow chart for ...
Gonzalez, Carlos A., Chanson, Hubert
openaire   +2 more sources