The NeqSim Web project is a web user interface for the neqsim process simulator.
The application is in initial development and is using the streamlit framework.
The application is hosted by streamlit and can be tested at neqsim web app link.
Process Flowsheet Studio builds and solves reusable steady-state NeqSim cases from shared fluid packages, independent inlet streams, unit operations, and explicit material or energy connections.
Enable an equipment design basis in a pump, two-sided heat exchanger, valve, or pipeline to compare its solved operating point with explicit capacities. The Workbook · Design view reports operating value, capacity, margin, utilization, status, and engineering unit in a normalized table. Pipeline rows also identify the critical native velocity-profile segment and length when the NeqSim unit exposes that profile.
The downloadable engineering workbook contains the same review-ready data in the Equipment Design worksheet together with streams, equipment, constraints, convergence, and conservation evidence. These results support screening and engineering studies; they are not design certification.
Schema v4 adds execution-neutral subflowsheets on top of the authoritative flat process graph. A subflowsheet owns a non-overlapping set of units and declares every material or energy port used where a connection crosses its boundary. Terminal product ports may also be exposed explicitly. Studio validates these contracts during import, draft history, execution planning, and solve readiness; the draft diagram renders each group as a labeled dashed container and lists its boundary-port mappings. Schema-v1–v3 cases migrate to v4 with an empty subflowsheet list, so existing calculations remain unchanged.