The Initial Phase of the Rising Hydrograph of Turbulent Free Surface Flow with Unsteady Lateral Inflow

1968 ◽  
Vol 4 (6) ◽  
pp. 1189-1192 ◽  
Author(s):  
Wilfried Brutsaert
Keyword(s):  
Free Surface ◽  
Initial Phase ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Lateral Inflow

Laboratory Analysis of Momentum-Induced Chokes in Free Surface Flow

2003 ◽  
Author(s):  
Alfred D. Parr
Keyword(s):  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Inlet Section ◽  
Flow Conditions ◽  
Flume Experiments ◽  
Laboratory Exercise ◽  
Sewer Systems ◽  
Volumetric Rate ◽  
Lateral Inflow

The laboratory exercise described herein allows undergraduate fluid mechanics students to observe and perform experiments on an interesting and pertinent free surface flow phenomenon. A momentum-induced choke is created when lateral inflow enters a hydraulically steep channel at a volumetric rate that is sufficient to induce a choke condition. The choke condition creates a hydraulic jump that may move upstream and drown the channel inlet section. This situation can occur at inlets in storm sewer systems. The project requires students to derive an analytical equation giving the critical lateral inflow rate as a function of approach flow conditions. They also perform a series of flume experiments that produce empirical data for comparison with the theoretical equation.

scholarly journals Laminar free-surface flow into a vertical cylinder

1975 ◽  
Vol 3 (1) ◽  
pp. 51-68 ◽  
Author(s):  
Thomas G. Smith ◽  
J.O. Wilkes
Keyword(s):  
Free Surface ◽  
Vertical Cylinder ◽  
Free Surface Flow ◽  
Surface Flow

Free-Surface Flow Simulations With Interactively Moving Bodies

2017 ◽  
Author(s):  
Arthur E. P. Veldman ◽  
Henk Seubers ◽  
Peter van der Plas ◽  
Joop Helder
Keyword(s):  
Free Surface ◽  
Free Fall ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Numerical Solution Method ◽  
Flow Simulations ◽  
Floating Object ◽  
Offshore Industry ◽  
Floating Objects ◽  
Moving Bodies

The simulation of free-surface flow around moored or floating objects faces a series of challenges, concerning the flow modelling and the numerical solution method. One of the challenges is the simulation of objects whose dynamics is determined by a two-way interaction with the incoming waves. The ‘traditional’ way of numerically coupling the flow dynamics with the dynamics of a floating object becomes unstable (or requires severe underrelaxation) when the added mass is larger than the mass of the object. To deal with this two-way interaction, a more simultaneous type of numerical coupling is being developed. The paper will focus on this issue. To demonstrate the quasi-simultaneous method, a number of simulation results for engineering applications from the offshore industry will be presented, such as the motion of a moored TLP platform in extreme waves, and a free-fall life boat dropping into wavy water.

Model coupling techniques for free-surface flow problems: Part II

2005 ◽  
Vol 63 (5-7) ◽  
pp. e1897-e1908 ◽  
Author(s):  
E. Miglio ◽  
S. Perotto ◽  
F. Saleri
Keyword(s):  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Model Coupling ◽  
Flow Problems ◽  
Coupling Techniques
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