Cover large solution spaces
You analyze the entire solution space with full factorial or space-filling designs
Multivariate Sensitivity Study
to know your process
What is Multivariate Sensitivity Study?
Multivariate Sensitivity Study allows the simultaneous examination of multiple input and output relationships and their effect on simulation results. It focuses on sensitive parameters to avoid critical operation areas of your process, to optimize the process with different constraints and objectives, and make better process-related decisions.
For a fast calculation, the Multivariate Sensitivity Study is calculated on a cluster of CHEMCAD / DWSIM instances.
It is for every engineer who wants to visualize their process behavior, get valuable insights for optimized operation, and improve energy and production efficiencies.
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
Multivariate Sensitivity Study (MSS) is an application hosted on Dashboard, our simulation platform developed for process engineers working with flowsheets.
How sensitive is your process to parameter changes?
Get started with MSS on Dashboard
Upload Flowsheet
Create
Filter
Set up
MSS
Run
Analysis
Learn more from our use cases
Case 1- Optimization of a Batch Distillation for Solvent Recovery
Objectives and Constraints
Set-up
Results
Challenges
Objectives and Constraints
- Minimize energy demand
- Minimize operation time
- Maximize product yield
- Product concentration as a constraint
Set-up
- Five design variables
- Equidistant grid (per variable)
- 78.125 flowsheet calculated (mass transfer batch column simulation)
Results
Increased the solvent recovery efficiency
- 74% energy saving
- 4.5 h reduction in operation time
- 7% increase in product yield
Challenges
- 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
Case 2- Distillation of an Ethanol-Water Mixture (see video)
Objectives and Constraints
Set-up
Results
Objectives and Constraints
- Maximize product yield
- Minimize energy demand
- Product concentration as a constraint
Set-up
- Two design variables
- Equidistant grid (per variable)
- 9.550 flowsheet calculated (SCDS)
Results
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
