An Analysis of Deep Submerged Multiple-Port Buoyant Discharges

1977 ◽  
Vol 99 (4) ◽  
pp. 648-654 ◽  
Author(s):  
L. D. Kannberg ◽  
L. R. Davis
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Gradual Transition ◽  
Two Dimensional ◽  
Buoyant Jets ◽  
Multiple Jets ◽  
Buoyant Discharges

The results of an experimental study of deep submerged multiple-port thermal discharges are compared to the predictions of a theory treating the dilution of merging multiple-port buoyant jets discharge from a row of equally spaced ports. The paper summarizes the considerable alteration of the Hirst [11] model necessary to adequately treat merging multiple jets. The essential features of the analysis are: (1) the gradual transition of the profiles from simple axisymmetric profiles to merging profiles and finally to fully merged, pseudo-slot, two-dimensional profiles, and (2) an entrainment based on the available entrainment surface. Results indicate that the overprediction of plume characteristics associated with certain other models as compared to experimental data may be overcome using such an analysis and that suitable prediction may be obtained.

An Experimental Study of Vertical Buoyant Jets Discharged Into Water of Finite Depth

1975 ◽  
Vol 97 (2) ◽  
pp. 274-281 ◽  
Author(s):  
R. J. Pryputniewicz ◽  
W. W. Bowley
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Large Body ◽  
Finite Depth ◽  
Integral Approach ◽  
Governing Equations ◽  
Buoyant Jets ◽  
Laboratory Facilities ◽  
Jet Characteristics ◽  
Theoretical Results

This paper presents an experimental study of turbulent buoyant jets discharged vertically through a single circular submerged pipe into a large body of stagnant nonstratified water of finite depth. The experiments were carried out in laboratory facilities consisting of a closed system capable of maintaining steady-state conditions. The temperature characteristics of a hot rising plume were obtained, for numerous flows, as a function of discharge Froude number and discharge depth. The governing equations to predict jet characteristics are also presented, using an integral approach. A computer was used for reduction of experimental data and the numerical solution to the governing equations. The experimental and theoretical results compared favorably.

Measurements in Two-Dimensional Plumes in Crossflow

1989 ◽  
Vol 111 (2) ◽  
pp. 130-138 ◽  
Author(s):  
B. R. Ramaprian ◽  
H. Haniu
Keyword(s):  
Experimental Data ◽  
Short Distance ◽  
Two Dimensional ◽  
Mean Flow ◽  
Buoyant Jets ◽  
Laser Velocimetry ◽  
Buoyancy Forces ◽  
The Mean

The mean-flow and turbulent properties of two-dimensional buoyant jets discharged vertically upward into a crossflowing ambient have been measured in a hydraulic flume, using laser velocimetry and microresistance thermometry. The trajectory of the resulting inclined plume is found to be nearly straight, beyond a short distance from the source. The flow is essentially characterized by the presence of buoyancy forces along (s-direction) and perpendicular (n-direction) to the trajectory. While the s-component buoyancy tends to destabilize the flow and hence raise the overall level of turbulence in the flow, the n-component buoyancy tends to augment turbulence on the upper part of the flow and inhibit turbulence on the lower part. The experimental data are used to examine these effects quantitatively.

Resistance of an Inclined Plate Placed on a Plane Boundary in Two-Dimensional Flow

1970 ◽  
Vol 92 (1) ◽  
pp. 21-28 ◽  
Author(s):  
K. G. Ranga Raju ◽  
R. J. Garde
Keyword(s):  
Experimental Data ◽  
Boundary Layer ◽  
Experimental Study ◽  
Turbulent Boundary Layer ◽  
Drag Coefficient ◽  
Wind Tunnels ◽  
Plane Boundary ◽  
Two Dimensional ◽  
Inclined Plate ◽  
Two Dimensional Flow

This paper describes the results of an experimental study on the drag coefficient of a two-dimensional sharp-edged plate placed on a plane boundary at different inclinations to the flow. Experimental data were collected to investigate the effects of (i) inclination of the plate to the flow, (ii) the relative submergence of the plate in a turbulent boundary layer, and (iii) the proximity of the tunnel walls to the plate, on the drag coefficient of the plate. Relations have been developed to enable correction for “blockage effect” and also to evaluate the effects of inclination of the plate and the presence of the boundary layer on the drag coefficient of the plate. Data collected by other investigators in wind tunnels of various dimensions have also been used in the development of the foregoing relations.

Modelling of Moisture Movement in Wood during Outdoor Storage

2001 ◽  
Vol 6 (2) ◽  
pp. 3-14 ◽  
Author(s):  
R. Baronas ◽  
F. Ivanauskas ◽  
I. Juodeikienė ◽  
A. Kajalavičius
Keyword(s):  
Experimental Data ◽  
Finite Difference ◽  
Climatic Conditions ◽  
Two Dimensional ◽  
Moisture Movement ◽  
Finite Difference Technique ◽  
Long Term Storage ◽  
Space Formulation ◽  
Term Storage

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.

EXPERIMENTAL STUDY OF THE KINEMATIC PARAMETERS OF MOVEMENT OF CARS FORCED IDLE MOTION

2018 ◽  
pp. 52-57
Author(s):  
Ivelin Kostov
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Experimental Research ◽  
Kinematic Parameters ◽  
Research Results ◽  
Software Product

In the work brought some experimental data of kinematic parameters of movement of cars forced idle, as the software product was used to diagnose 900 ATS, which recorded kinematic parameters of vehicle. On the basis of the conducted experimental research results are shown tabulated and analysed.

scholarly journals Modelling Weirs in Two-Dimensional Shallow Water Models

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2152
Author(s):  
Gonzalo García-Alén ◽  
Olalla García-Fonte ◽  
Luis Cea ◽  
Luís Pena ◽  
Jerónimo Puertas
Keyword(s):  
Experimental Data ◽  
Shallow Water ◽  
Shallow Water Equations ◽  
Water Model ◽  
Two Dimensional ◽  
Shallow Water Model ◽  
Experimental Dataset ◽  
River Hydraulics ◽  
Shallow Water Models ◽  
Water Models

2D models based on the shallow water equations are widely used in river hydraulics. However, these models can present deficiencies in those cases in which their intrinsic hypotheses are not fulfilled. One of these cases is in the presence of weirs. In this work we present an experimental dataset including 194 experiments in nine different weirs. The experimental data are compared to the numerical results obtained with a 2D shallow water model in order to quantify the discrepancies that exist due to the non-fulfillment of the hydrostatic pressure hypotheses. The experimental dataset presented can be used for the validation of other modelling approaches.

Theoretical and experimental study of fabrics developed by different shaped markers in two-dimensional simple shear

1983 ◽  
Vol S7-XXV (3) ◽  
pp. 319-326 ◽  
Author(s):  
Angel Fernandez ◽  
Jean-Louis Feybesse ◽  
Jean-Francois Mezure
Keyword(s):  
Experimental Study ◽  
Simple Shear ◽  
Two Dimensional
Sign in / Sign up

Export Citation Format

Share Document