Published: 12/2024
Bentley serviceModeling Reference OpenFlows | Water Infrastructure Hammer TechNotes and FAQs Flow (Typical): This is a typical (positive) flow through the orifice or valve. Elevation: Elevation at centroid of junctions, valves, and pumps; the ground elevation at tanks; the grade at Bentley CommunitiesHow to model downstream service reservoir the Modeling the filling of an empty pipe in HAMMER - Bentley SystemsIf you need to analyze the transient effects of the air being expelled, this can be done by using the Discharge to Atmosphere element, operating as an orifice. The initial conditions must describe PaginationserviceModeling Reference OpenFlows | Water Infrastructure Files WEBHAMMER 2024 Help. Discharge To Atmosphere Attributes. ID: Unique identifier assigned to this element. Label: Descriptive label for this element. Notes: Additional information about this side. Hyperlinks: Associate one or more web link, photo, word processing document, or other file with this element. Discharge Element Type TryBentley OpenFlows | Water Infrastructure Discharge to Atmosphere Elements WEBBentley OpenFlows HAMMER CONNECT Edition Help. Discharge to Atmosphere Elements. Models a point where flow leaves the pipe network and discharges to atmosphere. There are three choices for the Discharge Element Type: Orifice Modeling the filling of an empty pipe in HAMMERWEBIf you need to analyze the transient effects of the air being expelled, this can be done by using the Discharge to Atmosphere element, operating as an orifice. The initial conditions must describe the low head condition (zero pressure at the discharge to atmosphere element) and you must enter a volume of air in the "Gas Volume (Initial)" field.bentley.comDischarge to Atmosphere Elements WEBBentley HAMMER CONNECT Edition Help. Discharge to Atmosphere Elements. Models a point where flow leaves the pipe network and discharges to atmosphere. There are three choices for the Discharge Element Type: Orifice WEBAir Volume (Initial): Volume of air near the valve at the start of the simulation. The default is zero. If volume is nonzero, the pressure must be zero. Diameter (Air Inflow Orifice): Diameter of the air inflow orifice (the orifice through which air enters the pipeline when the pipe internal pressure is less than atmospheric pressure).serviceBasics of a Transient Analysis in HAMMERWEBThe HAMMER model of the above pipeline can be color coded based on maximum pressure over the course of a transient event with red being the highest and green the lowest. Related topics. This paper described the kinds of data required to run a transient model like HAMMER. Some other considerations are listed in the following section PaginationBentley Air Volume (Initial): Volume of air near the valve at the start of the simulation. The default is zero. If volume is nonzero, the pressure must be zero. Diameter (Air Inflow Orifice): Diameter of the air inflow orifice (the orifice through which air enters the pipeline when the pipe internal pressure is less than atmospheric pressure).serviceBasics of a Transient Analysis in HAMMERThe HAMMER model of the above pipeline can be color coded based on maximum pressure over the course of a transient event with red being the highest and green the lowest. Related topics. This paper described the kinds of data required to run a transient model like HAMMER. Some other considerations are listed in the following section Bentley Discharge To Atmosphere Attributes ID: Unique identifier assigned to this element.; Label: Descriptive label for this element.; Notes: Additional information about this element.; GISHow are demands treated during the transient simulation in HAMMER?Q OpenFlows | Water Infrastructure How are demands treated during the transient simulation in HAMMER?CheckQ Modeling Reference Modeling Reference - Surge Valves in HAMMERThreshold Pressure (SAV) - This is the pressure below which the valve opens up to the atmosphere. Discharge Coefficient (when SAV Fully Open) - This is located under the "Transient (Physical)" section of the properties and is used to define the discharge coefficient (Cv) of the SAV when it is fully open. Basically at the time when the valve is PaginationserviceOpenFlows | Water Infrastructure How are demands treated during the transient simulation in HAMMER?WEBBy default, HAMMER assumes that any air allowed into the system at the individual demand points cannot reach the aggregate demand location. If this is not the case and you need to allow air into the system, use the Discharge to Atmosphere element.serviceModeling Reference Modeling Reference WEBBentley HAMMER Theory and Practice . Home Discharge to Atmosphere Elements; Orifice Between Pipes Elements; Valve with Linear Area Change Elements; Surge Tanks; Protective Equipment Reference ; Improved Handling of NearOpenFlows | Water Infrastructure Forum WEBAir Volume (Initial): Volume of air near the valve at the start of the simulation. The default is zero. If volume is nonzero, the pressure must be zero. Diameter (Air Inflow Orifice): Diameter of the air inflow orifice (the orifice through which air enters the pipeline when the pipe internal pressure is less than atmospheric pressure).Pagination