By Duncan McElrue
Senior Technical Support Engineer, Intergraph CADWorx & Analysis Solutions
Visual Vessel Design (VVD) is a comprehensive pressure vessel, shell and tube exchanger, and boiler design and analysis software with a strong emphasis on European codes and standards.
VVD enables the explicit modeling of most vessel components. However, while building the model, the input tabbed pages of a component are filled in and the component is analyzed and saved. Any existing component in a model that could be relevant to the current component’s input may be available for selection during that input so that its pertinent information can be used in the current component analysis.
Most components’ input enable the manual entry of relevant data about neighboring or attached components that affect the current component analysis. The analysis of the component can be completed and vessel modeling can proceed.
One example of this is a jacket attachment component, ‘BR Block/Sealing Ring.’ The vessel main cylindrical shell has already been modeled and the component attached to it, but no jacket yet. Therefore, relevant details of the jacket must be manually entered:
If the main cylindrical body of the jacket is explicitly modeled at a later stage so that a complete vessel is built up, then that jacket shell component (relevant data) can be retrospectively added to the Sealing Ring component:
In fact, manually entering the jacket parameters for the Sealing Ring enables the analysis of the sealing ring to show whether or not the input jacket parameters will allow the analysis to pass and, therefore, helps design the jacket.
Another example is in fixed tubesheet heat exchanger analysis. A later added ‘EB Expansion Bellows’ component can be added (relevant data) to tubesheet input so that it can be included in the tubesheet analysis.
For example, Tubesheet input with (‘Including’) Expansion Bellows:
Yet another example is in cone to shell junction rings for ASME VIII Division 1 vessels. Later added ‘SR Stiff. Ring’ components can be added (relevant data) to Conical Shell input so that they (inertia ...) can be included in the analysis of the cone.
For example, Bottom Ring inclusion (at large base of cone):
Given this capability, required for complete 3D vessel modeling purposes, the design engineer can choose the extent of vessel component modeling to obtain the required analysis and deliverables for a given vessel. This is a major benefit for your workflows.