{"id":558914,"date":"2024-11-05T18:22:24","date_gmt":"2024-11-05T18:22:24","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-890302011\/"},"modified":"2024-11-05T18:22:24","modified_gmt":"2024-11-05T18:22:24","slug":"esdu-890302011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-890302011\/","title":{"rendered":"ESDU 89030:2011"},"content":{"rendered":"<p>\n\tESDU 89030 introduces a Fortran program, ESDUpac A8930, that<br \/>\npredicts, following pump trip and\/or valve operation, the changing<br \/>\nvalues at a junction of liquid pressure and flow velocity,<br \/>\nstructural displacement, velocity and acceleration, and piping<br \/>\nforces in a liquid-filled planar system. The effect of the mutual<br \/>\ncoupling of the fluid and pipe behaviour is included in the<br \/>\nanalysis (or, if desired, can be neglected). Guidance is included<br \/>\non modelling the pump characteristics and the valve closure\/time<br \/>\nbehaviour. Values of friction factor and wave speed are required<br \/>\nfor each pipe, or can be computed by the program. Data on the<br \/>\nnatural vibration characteristics of the system are also necessary,<br \/>\nand can be generated by ESDU 88022, in which case they will be in<br \/>\nthe format required by the program. The effects of axial strain in<br \/>\nthe pipe walls are neglected, and the program assumes elastic<br \/>\nstructural behaviour and a homogeneous fluid. Thus, although gas<br \/>\nrelease and cavitation are predicted, their subsequent effect on<br \/>\nthe system behaviour cannot be modelled. Steady-state values of<br \/>\npressure, flow velocity, structural displacement and piping forces<br \/>\nare calculated before the transient analysis. A detailed<br \/>\nexplanation of the input data and their format is given, together<br \/>\nwith a worked example illustrating the use of the program and the<br \/>\npresentation of the output. Graphs produced from the program show a<br \/>\ncomparison between a coupled and uncoupled calculation of the<br \/>\nstructural parameters and fluid pressure at two points in the<br \/>\nsystem. The program is also provided in ESDUview.\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Pipeline Vibrations Fluid Transients in Non-Rigid, Unbranched Planar Piping Systems<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/esdu\/\"><b>ESDU<\/b><\/a><\/td>\n<td>2011-06<\/td>\n<td>NA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-558914","1":"product","2":"type-product","3":"status-publish","5":"product_cat-esdu","7":"first","8":"instock","9":"sold-individually","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/558914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=558914"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=558914"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=558914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}