{"id":2225,"date":"2015-02-02T17:47:39","date_gmt":"2015-02-02T22:17:39","guid":{"rendered":"https:\/\/www.hidrasoftware.com\/?p=2225"},"modified":"2020-11-16T16:49:42","modified_gmt":"2020-11-16T21:19:42","slug":"pumping-station-with-centrifugal-pumps-minimum-required-data-for-its-modeling-with-ariete-the-water-hammer-software","status":"publish","type":"post","link":"https:\/\/www.hidrasoftware.com\/en\/pumping-station-with-centrifugal-pumps-minimum-required-data-for-its-modeling-with-ariete-the-water-hammer-software\/","title":{"rendered":"Pumping Station with Centrifugal pumps \u2013 Minimum Required Data for its Modeling with Ariete, the Water Hammer Software"},"content":{"rendered":"

One of the Pipeline\u2019s Boundary Conditions that can be defined in Ariete, our software for water hammer calculation in pipeline systems<\/strong>, is that of a water Pumping Station in which there exists one or more Centrifugal Pumps with similar characteristics and operating in parallel (two or more units).<\/p>\n

Once you\u2019ve created the Analysis Longitudinal Profile<\/a> of the pipeline to model with Ariete, the next step is to establish the boundary conditions at its start and end chainages. In this case, what you will be selecting is Pumping Station so you must activate the corresponding option in the Devices menu <\/em><\/strong>\u2192<\/em> Upstream Device <\/em>\u2192<\/em> Pumping Station:<\/em><\/p>\n

\"Setting-pipelines-upstream-boundary-condition-for-water-hammer-analysis\"<\/p>\n

After that, the Pumping Station dialog<\/strong> will be shown for defining the necessary information:<\/p>\n

\"Pumping-stations-dialog-in-ariete-water-hammer-analysis-software\"<\/p>\n

From this dialog it is not only possible to enter specific information about the Centrifugal Pumps<\/strong> installed in the pumping station, but also how the pumping system is expected to operate<\/strong> when modeling the water hammer occurrence can be indicated on it<\/strong>, specifically in regards to the sudden stop in the case of electricity supply failure into the pumping station.<\/p>\n

\nAdditionally, the Water Hammer Control Devices to be installed inside the modeled Pumping Station can be specified in this same dialog, as related in this Article<\/a>.
\n<\/div><\/div>\n

Let’s review below the minimum information required in the fields on Data and Operation tabs of the Pumping Station dialog.<\/p>\n

Pumping Station Data Tab<\/h2>\n

Modeling of Pumping Stations feeding pipeline systems with Ariete is done by adjusting the values \u200b\u200bof the installed centrifugal pumps\u2019 characteristic curve to a quadratic equation of the type:<\/p>\n

\"centrifugal-pump-characteristic-curve-equation\"<\/p>\n

Where:<\/p>\n\n\n\n\n\n
HB<\/sub>:<\/strong><\/td>\nIs the net head or head pressure generated by the centrifugal pump.<\/td>\n<\/tr>\n
QB<\/sub>:<\/strong><\/td>\nPumped flow by the centrifugal pump<\/td>\n<\/tr>\n
A, B, C<\/strong><\/td>\nData adjustment coefficients.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

This adjustment is made from the information provided by the user on the Data tab<\/strong> of the aforementioned Pumping Station dialog and for which there are two options:<\/p>\n