To reduce costs and to extend the lifetime of piping systems their design loads due to valve action have to be optimized. To get the best effect the results of the fluiddynamic and structural calculations should be realistic as far as possible. Therefore, the calculation programs were coupled to consider the fluid structure interaction and the effect of dynamic fluid friction was introduced to get realistic results of oscillations due to pressure surges. Detailed modeling of check valve behavior allows minimizing the pressure surge loading by improving the valve function and adapting it to the system behavior. The method was validated at measurements of load cases in power plant piping systems. Results with different load cases show the effectiveness of reducing the fluid forces on piping. Examples are given to prove the reduction of supports.
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February 2005
Article
Optimization of Loads in Piping Systems by the Realistic Calculation Method Applying Fluid-Structure-Interaction (FSI) and Dynamic Friction
Tilman Diesselhorst,
e-mail: tilman.diesselhorst@framatome-anp.com
Tilman Diesselhorst
Framatome ANP GmbH, Dept. NGPS1, PO Box 3220, D-91050 Erlangen, Germany
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Ulrich Neumann
e-mail: ulrich.neumann@framatome-anp.com
Ulrich Neumann
Framatome ANP GmbH, Dept. NGPS1, PO Box 3220, D-91050 Erlangen, Germany
Search for other works by this author on:
Tilman Diesselhorst
Framatome ANP GmbH, Dept. NGPS1, PO Box 3220, D-91050 Erlangen, Germany
e-mail: tilman.diesselhorst@framatome-anp.com
Ulrich Neumann
Framatome ANP GmbH, Dept. NGPS1, PO Box 3220, D-91050 Erlangen, Germany
e-mail: ulrich.neumann@framatome-anp.com
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division December 4, 2003; revision received September 8, 2004. Review conducted: W. L. Cheng.
J. Pressure Vessel Technol. Feb 2005, 127(1): 1-6 (6 pages)
Published Online: March 15, 2005
Article history
Received:
December 4, 2003
Revised:
September 8, 2004
Online:
March 15, 2005
Citation
Diesselhorst, T., and Neumann, U. (March 15, 2005). "Optimization of Loads in Piping Systems by the Realistic Calculation Method Applying Fluid-Structure-Interaction (FSI) and Dynamic Friction ." ASME. J. Pressure Vessel Technol. February 2005; 127(1): 1–6. https://doi.org/10.1115/1.1845449
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