Cover large solution spaces
You analyze the entire solution space with full factorial or space-filling designs
What is Multivariate Sensitivity Study?
Multivariate Sensitivity Study calculates the multidimensional solution space (hypercube) of a CHEMCAD or a DWSIM flowsheet simulation. The number of input parameters can be increased freely to widen the solution space.
For a fast calculation, Multivariate Sensitivity Studies are calculated on a cluster of CHEMCAD / DWSIM instances.
It is for every engineer to visualize solution spaces and pareto fronts for multi-objective optimization problems to support decision making.
Why use the Multivariate Sensitivity Study?
Apply constraints with filters
You discover parameter dependencies and dimension reductions using big data analytics
Find pareto-optimal solutions
You visualize solution spaces and pareto fronts for multi-objective optimization problems
How sensitive is your process to
parameter changes?
Learn more from our use cases
Use Case 1
Optimization of a Batch Distillation for Solvent Recovery
Objectives and Constraints
Set-Up
Results
Challenges
- Minimize energy demand
- Minimize operation time
- Maximize product yield
- Product concentration as a constraint
- Five design variables
- Equidistant grid (per variable)
- 78.125 flowsheet calculated (mass transfer batch column simulation)
Increased the solvent recovery efficiency
- 74% energy saving
- 4.5 h reduction in operation time
- 7% increase in product yield
- Infeasible design specifications cause convergence problems
- Due to product accumulation, product specifications must be given indirectly as design specifications
- The correlation of design and state variables are not obvious
Use Case 2
Distillation of an Ethanol-Water Mixture
Objectives and Constraints
Set-Up
Results
- Maximize product yield
- Minimize energy demand
- Product concentration as a constraint
- Two design variables
- Equidistant grid (per variable)
- 9.550 flowsheet calculated (SCDS)
Understand the correlations between variables
Flowsheet (CHEMCAD)
Flowsheet (DWSIM)
Interactive Data Explorer
Use the sliders on the report below to apply limitations!
Observe the relationship between variables.
Check the sensitivities by varying:
- EtOH fraction
- Distillate rate
- Reboiler duty