Discussion of “Rouse on the Hydraulic Jump”

Rouse, Hunter; Woodward, Sherman M.; Kennedy, Robert E.; Hall, L. Standish; O’Brien, Morrough P.; Engel, F. V. A.; Woods, Baldwin M.; Stevens, J. C.; Page, Nolan; Ivanchenko, A. I.; Mavis, Frederic T.; Luksch, Andreas; Nelidov, I. M.

doi:10.1061/taceat.0004768

Cited by 4 publications

(4 citation statements)

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“…Essentially, the equipment consisted of the absorption cell, A, which was connected through a throttle valve, B, to one of three isochoric chambers of different capacity, C, D, and E. The latter were maintained at uniform temperature by a liquid bath and permitted the measurement of the quantity of gas withdrawn from absorption chamber A in terms of the indications of the mercury in glass manometer F. The pressure existing within absorption chamber A was determined by means of the mercury-in-glass manometer, G. Provision was made at H for the withdrawal of gas from vessels, C, D, and E after measurement by means of a mercury diffusion pump backed by mechanical equipment. The entire apparatus was composed of glass since the pressures involved were not more than 15 pounds per square inch above that of the atmosphere.…”

Section: Diffusion Constantsmentioning

confidence: 99%

“…Furthermore, this behavior was roughly independent of the relative opening of the valve except when it was nearly closed. If the pressure difference across the valve was raised to approximately 10 pounds per square inch, exceedingly small bubbles were visible as a cloud when the static pressure within the observation chamber at the outlet of the throttle valve was from 0.2 to 0.4 pound per square inch above the equilibrium bubble point value with a concentration of propane in the incoming liquid of approximately 15 pounds per cubic foot.…”

Section: Bubble Formationmentioning

confidence: 99%

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Nonequilibrium Behavior in Heterogeneous Hydrocarbon Systems

Hatcher¹,

Sage²

1941

Ind. Eng. Chem.

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Section: Diffusion Constantsmentioning

confidence: 99%

Section: Bubble Formationmentioning

confidence: 99%

Nonequilibrium Behavior in Heterogeneous Hydrocarbon Systems

Hatcher¹,

Sage²

1941

Ind. Eng. Chem.

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“…The nature of turbulence has received special attention, and many of the concepts and theories (3) proposed bear directly or indirectly on the question of mass transfer in a turbulent fluid. It is impossible to summarize this work briefly, and the reader is referred to the general papers of von Karman (5), Rouse (8), Izakson (4), and Bakhmeteff (1), A recent paper by Dryden ($) gives an excellent summary, with particular reference to diffusion.…”

Section: Turbulence and Eddy Diffusionmentioning

confidence: 99%

Mass Transfer between Phases Role of Eddy Diffusion

Sherwood¹,

Woertz²

1939

Ind. Eng. Chem.

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varies from year to year and the amount of water withdrawn, which is the only factor under the control of the users. If the amount of water withdrawn lowers the fresh water head sufficiently, salt water will move up the formation.In the early days of Houston, flowing wells could be obtained almost anywhere within the present city limits, and the artesian head in some wells was sufficient to raise the water from 15 to 30 feet above the ground. Now the artesian head is about 80 feet below the surface in the downtown part of Houston. Between 1920 and 1931 the decline in artesian head averaged about 4 feet a year. Between 1931 and 1936 there was little decline in artesian head in the heavily pumped Houston-Pasadena district. In the area to the south and southeast of Houston, however, the artesian head declined markedly. In 1937 new wells were put down in Pasadena which are reported to have a combined capacity of 20,000,000 gallons a day, an increase of about 40 per cent over the average pumpage for 1931-36. From March, 1937, when these wells were put into operation, to March,. 1938. there was a pronounced decline in water levels in observation wells in the Houston-Pasadena district, particularly in those within 4 miles of the new wells. In two wells, 6/s and ls/4 miles distant, respectively, the decline in water level was 35 feet in the 12-month period. Saky^KaieLjAJam$Ln-iaHie nptffir distant dowmthe dipjnjhe-deeperjjeds, from which a large part of the water in the Houston district is drawn. There is, therefore, a distinct possibility that any large decline in artesian head may result in the encroachment of salty water into the wells of the district. Fortunately such an encroachment is likely to be slow, and can be watched and to a degree anticipated if proper observations are made.The progress report on the ground water resources of the Houston district (3), published in March, 1937, recommends that (a) there should be no increase in pumping igthp.-HnuKtori district, (6) addSlQÜ5rsñüHiés~o7 ground water .should be obtained at a sufficient distance fromlhe clIyAo avoid undue interception oí water_thai 5~repienishing the ground water reservoir in the heavily pumpedJHouston-Pasadena area, and (c) prodigal^ndlrast^SlTiieoI water should be eliminated.

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“…Experimental and analytical research has been carried out on the hydraulic drop and jump in horizontal and sloping bed channel. Hence, empirical relationships of various hydraulic characteristics have been developed [10][11][12]. Author in [5] derived the set of equations ( 1)-( 4) concerning the hydraulic characteristics due to flow in the horizontal channel passing over square edge drop structure:…”

Section: Introductionmentioning

confidence: 99%

Study of Flow Characteristics Over a Rounded Edge Drop Structure in Open Channel

Kori

Mahessar

Channa

et al. 2019

Eng. Technol. Appl. Sci. Res.

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Flow over a drop structure is a form of free overfall called hydraulic drop. Hydraulic drop changes the nature of flow abruptly from sub-critical to super-critical condition. Rapidly varied flow analysis is a complex phenomenon and involves remarkable characteristics. Some of the drop structures constructed in Sindh and Punjab provinces of Pakistan had gone through diverse failures, consequential in interruption of water supply to irrigation fields encountering substantial economic loss. In the present study experiments were carried out in the hydraulic laboratory of Mehran University of Engineering and Technology on round edged drop structure fitted in a horizontal rectangular flume (channel model). Data regarding hydraulic drop and hydraulic jump characteristics were collected during the experiment. The observed data included: flow discharge (Q), radius of rounded edge drop structure (r), height of the structure (h), hydraulic drop length (Ld), hydraulic jump length (Lj), depth of flow at toe of the jump (Y1) and tailwater depth (Y2). Applying dimensional analysis, the non-dimensional parameters of the observed data were calculated. Using statistical analysis, empirical relationships among the non-dimensional parameters were established for the appropriate design of the drop structure. The research results showed that the length and depth indices are functions of D=q2gh3 and r/h values. It was also found that for rounded-edge drop structure, the length of the stilling basin (LSB) reduces as r/h ratio increases

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Discussion of “Rouse on the Hydraulic Jump”

Cited by 4 publications

References 0 publications

Nonequilibrium Behavior in Heterogeneous Hydrocarbon Systems

Nonequilibrium Behavior in Heterogeneous Hydrocarbon Systems

Mass Transfer between Phases Role of Eddy Diffusion

Study of Flow Characteristics Over a Rounded Edge Drop Structure in Open Channel

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