SCADTS
SCADTS
Instructions to Install Free Version
SCADTS is a versatile simulation engine designed for creating, editing, and running multiple fluid, electrical and wiring diagram network models simultaneously in a fully integrated approach. SCADTS provides the means to compute the diameter, velocity, length, differential pressure and conductivity of the pipe according to pipe properties. It calculates the pressures, flows, temperatures, humidity, volts, current and device states without requiring any software development from the user. Communication between circuits electrical, fluid systems and wiring diagrams is handled mostly by a Publish/Subscribe approach.
This flexibility makes SCADTS a powerful tool for engineers and students seeking to optimize fluid, electrical and wiring diagram systems by running the integrated systems in real-time. This has particular advantages for PLC programming where the ladder logic may be tested against a dynamic system prior to deployment.
This is the latest software update that focuses on the communication between circuits particularly in relation to a thermal-hydraulic and associated wiring diagram. Communication between solenoids and switches are done using a Publish/Subscribe technique.
SCADTS is a simulation tool that solves linearized equations sets for fluid and electrical distribution circuits and with the means to include associated devices. So is SCADTS a design or simulation tool? It is both and complements the tools available in the market that may only simulate for particular events or is a code generator or not suitable for real time.
FREQUENTLY ASKED QUESTIONS
The fluid model is homogeneous for both compressible or incompressible fluids. The relative amount (mass fraction) in the control volume (node) is specified at the boundary or computed. For example, if there is air intrusion from an empty tank the downstream device may be influenced by the change in the mass fraction. In the case of moist air it is expected to have both water vapour (i.e. in a saturated or superheated state ) and air. The total pressure of both air and water vapour is computed as well as the partial pressures.
The solution is numerically implicit and accurate to double precision which provides a solution according to the theory described in the Theory pdf selectable from different pages of SCADTS. The pdf file also provides information to specify the properties of devices that require specific inputs. Device properties are easy to understand and do not require understanding the mathematics behing the generalized solution.
FLUIDS
The following condensible-fluids are available in a multiphase system:
Water
R410a
R134a
The non-condensible fluid state is computed using the ideal gas equation which requires the Molecular weight to define the property.
A Multiphase Fluid uses the particular thermodynamic tables of that fluid and may achieve subcooled, saturated or superheated state. The boundary condition specifies the pressure, temperature and mass fraction. The latter is normally 1 or 0 corresponding to a fully condensible-fluid (Xc=1) or non-condensible-fluid (Xc=0)
Moist Air uses the psychometric tables to compute the partial pressure of water vapour, humidity and temperature. The boundary condition specifies the total pressure, temperature and relative humidity.