Ola Yasser Fahmy Abdelmaksoud <br/><br/>
Computational investigation of flow forces and cavitation directional control valves /  
Ola Yasser Fahmy Abdelmaksoud ; Supervised Hamdy A.Kandil  
 - Cairo :   Ola Yasser Fahmy Abdelmaksoud ,   2017 
 - 151 Leaves :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (M.Sc.) - German University - Faculty of  Postgraduate Studies and Scientific Research - Department of Machatronics Engineering 
<br/><br/> Dieectional control valves are responsible for directing the Oil flow in fluid power and hydraulic control system. The Performance of these valves and their actuation is highly affected by steady state flow reaction forces (SSFF) acting on thir spool that arise from the unbalanced pressure distributions on the spool walls