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River and Stream Water Quality Model (QUAL2K) |
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Software -
Environment
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Our rating: License: Free QUAL2K (or Q2K) is a river and stream water quality model that is intended to represent a modernized version of the QUAL2E (or Q2E) model (Brown and Barnwell 1987). Q2K is similar to Q2E in the following respects: One dimensional. The channel is well-mixed vertically and laterally. - Steady state hydraulics. Non-uniform, steady flow is simulated.
- Diurnal heat budget. The heat budget and temperature are simulated as a function of meteorology on a diurnal time scale.
- Diurnal water-quality kinetics. All water quality variables are simulated on a diurnal time scale.
- Heat and mass inputs. Point and non-point loads and abstractions are simulated.
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Software -
Chemistry
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Our rating: License: Free to try Enviropak is a combustion calculator and incinerator design software package.
The main features of the software are: - Large database of compounds
- User-defined mixtures
- Streams can be any combination of compounds and mixtures
- Composition can be specified by weight or mole fraction
- User specifies fuel/waste flowrate, excess air, heat losses, combustor dimensions
- Output gives combustion gas analyses, combustion temperature, combustor residence time, gas flowrates
- Destruction efficiency can be estimated for selected compounds as function of combustion temperature and residence time
- New compounds can be defined and Enviropak offers a range of estimation methods for important properties
- User may use any combination of US and Metric properties
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Loading Simulation Program in C++ (LSPC) |
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Software -
Environment
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Our rating: License: Free LSPC is the Loading Simulation Program in C++, a watershed modeling system that includes streamlined Hydrologic Simulation Program Fortran (HSPF) algorithms for simulating hydrology, sediment, and general water quality on land as well as a simplified stream transport model. LSPC is derived from the Mining Data Analysis System (MDAS), which was developed by EPA Region 3 and has been widely used for mining applications and TMDLs. A key data management feature of this system is that it uses a Microsoft Access database to manage model data and weather text files for driving the simulation. The system also contains a module to assist in TMDL calculation and source allocations. For each model run, it automatically generates comprehensive text-file output by subwatershed for all land-layers, reaches, and simulated modules, which can be expressed on hourly or daily intervals. Output from LSPC has been linked to other model applications such as EFDC, WASP, and CE-QUAL-W2. LSPC has no inherent limitations in terms of modeling size or model operations. The Microsoft Visual C++ programming architecture allows for seamless integration with modern-day, widely available software such as Microsoft Access and Excel.
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