Remarks on the mechanism of surface-pressure changes in baroclinic atmosphere

1957 ◽  
Vol 1 (2) ◽  
pp. 387-390
Author(s):  
Stanislav Brandejs
Keyword(s):  
Surface Pressure ◽  
Pressure Changes

Full 3-D Unsteady Numerical Simulation of Control Stage in Partial Admission Turbine

2015 ◽  
Vol 741 ◽  
pp. 509-512
Author(s):  
Guo Ping Li ◽  
Ke Ke Gao ◽  
Ke Yang ◽  
Yong Hui Xie
Keyword(s):  
Numerical Simulation ◽  
Surface Pressure ◽  
Flow Parameters ◽  
Control Stage ◽  
Air Turbine ◽  
Unsteady Surface Pressure ◽  
Partial Admission ◽  
Unsteady Numerical Simulation ◽  
Pressure Changes ◽  
Mixing Losses

The unsteady flow parameters in control stage of partial admission are analyzed in details with full 3-D numerical simulation. The full annulus structure of air turbine in partial admission is modeled due to the unsymmetrical geometry. The partial admission is accomplished through the inlet blocked using segmental arc. The unsteady surface pressure changes of eight blades in the transition regions which demonstrate the power output ability are presented. That the entropy rise associated with the losses at different cross mainly caused by mixing losses and flow separation in partial admission is analyzed to estimate the efficiency distribution.

Dynamic surface-pressure changes and their significance for weather forecasting

1954 ◽  
Vol 4 (3) ◽  
pp. 350-370 ◽  
Author(s):  
Stanislav Brandejs ◽  
Jaroslav Kopáček ◽  
Vojtěch Vítek ◽  
Otakar Zikmunda
Keyword(s):  
Surface Pressure ◽  
Weather Forecasting ◽  
Dynamic Surface ◽  
Pressure Changes

scholarly journals Hydro-acoustic precursors of gravity waves generated by surface pressure disturbances localised in space and time

2014 ◽  
Vol 754 ◽  
pp. 250-262 ◽  
Author(s):  
Emiliano Renzi ◽  
F. Dias
Keyword(s):  
Gravity Waves ◽  
Surface Pressure ◽  
Coastal Flooding ◽  
Surface Gravity ◽  
Acoustic Gravity Waves ◽  
Compression Waves ◽  
Surface Gravity Waves ◽  
Slightly Compressible ◽  
Space And Time ◽  
Pressure Changes

AbstractWe consider the mechanics of coupled underwater-acoustic and surface-gravity waves generated by surface pressure disturbances in a slightly compressible fluid. We show that pressure changes on the ocean surface, localised in space and time, can induce appreciable underwater compression waves which are precursors of the surface gravity waves. Although the physical properties of acoustic-gravity waves have already been discussed in the literature, such dynamics was not investigated in previous studies. We derive new results for the underwater compression wave field and discuss the dynamics of its generation and propagation. This work could lead to the design of innovative alert systems for coastal flooding management.

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