material selection under the aspects of fatigue, corrosion, erosion-corrosion or hydro-abrasive wear, pump selection, and hydraulic quality criteria. Information on the methods and procedures for the various calculations and failure diagnostics discussed in the text are presented in tables which may be...
Unsteady-state numerical simulation calculations, taking forces of acceleration and inertia into account, have shown that sudden changes in position of the rotor are completely compensated for within one to two revolutions. Upon a sinusoidal axial relative motion of the rotor with respect to the housi...
Total Static Head - Total head when the pump is not running Total Dynamic Head (Total System Head) - Total head when the pump is running Static Suction Head - Head on the suction side, with pump off, if the head is higher than the pump impeller ...
TAN Lei, CAO Shuliang, WANG Yuming, et al. Numerical calculations for internal flow field in centrifugal pump impeller [ J ]. Transactions of the CSAE, 2012, 28 (14) : 47 - 51. (in Chinese).Tan Lei 1,Cao S...
Do calculations using maraging steel for the compressors and Krypton for the working gas. The following describes an embodiment of my favorite design for die engine of the current invention. Assume an engine comprising a steel cylinder 24 inches long of 11 inches inside diameter and 12 inches ...
thecurvesforthedropsoftheheadcoefi cientsobtainedfrom experimentsandcalculationsarealsoquantitativelycompared,whichshowsthatthedeclineoftheheadcoefi cientsateveryflow coemcientiscorrectlycaptured.andthepredictionaccuracyishigh.Inaddition,thedetailedanalysisismadeonthevapourvolume fractioncontoursontheplaneofspanis0.5...
Figure7demonstrates the performance curves of different models obtained from steady CFD calculations (0.6Qd‒1.4Qd). As shown in Figure7a, the head coefficient in the four models decreases as the flow rate increases. Additionally, due to the splitter blades increasing the work capability of the...
Download PDF Abstract The present work is concerned with a numerical study of the performance of a conical annular centrifugal contractor through the analysis of the flow properties when the apex angle is changed for different imposed axial flows. The calculations revealed the advantage of using conic...
that the invention may also be practiced in systems having the pump indirectly coupled to the motor, through intervening gearboxes or other drive elements, by incorporating appropriate conversion factors reflecting the intervening drive elements into the calculations disclosed herein in the manner known ...
patients, the clinical relevance of these findings will have to be proven in clinical investigations. Our study provides short-term in vitro data with small sample numbers. However, our statistical calculations prove the safety of a new device in comparison to a clinically well-established pump. ...