Topology-Optimization for internal Fluid Flow: TOSCA Fluid FE-DESIGN the optimization company

Transcription

1 Topology-Optimization for internal Fluid Flow: TOSCA Fluid

2 CFD topology optimization for channel flow Task: Find a geometrical proposal for a channel within a fluid design space: For each fluid cell decide:? Inflow Outflow... Should this cell belong to the channel or not? Each fluid cell is a design variable! Millions of design variables possible General optimization schemes are not feasible 2

3 OC-based Topology Optimization The Optimality Criterium is to avoid flow recirculation An achieved consequence is (for many technical flows) a reduction of pressure drop Redesign Rule: Elimination of local backflow and recirculation by blocking out of backflow areas provides an optimization approach by means of improvement 3

4 Topology optimization with TOSCA Fluid Outflow 1 Outflow 2 Define the Design Space (e.g. CAD) Meshing as usual Define your Boundary Conditions Run the Optimization Inflow Design Space 4

5 Topology optimization with TOSCA Fluid Outflow 1 Free Flow Outflow 2 Transition Area (defining new channel shape) Prevented Flow Inflow Design Space Optimized Channel Shape 5

6 Topology optimization with TOSCA Fluid Direct run time communication with the CFD solver Only one single CFD solver-run for complete optimization process CFD Solver Solution Process Shared-Memory TOSCA Fluid Optimization Optimization and Flow Result Time resp. Iteration suitable for large real world applications 6

7 TOSCA Fluid Result Reconstruction Methods STL-Surface Optimization result and Designspace IGES-Cuts CAD-Reconstruction based on IGES-Cuts 7

8 TOSCA Fluid Graphical User Interface 8

9 TOSCA Fluid Example Projects EGR-Cooler: Pressure Drop Reduction: 20% Efficiency Enhancement: 11 % Engine Air Intake / Filter System: Pressure Drop Reduction: 42% Flow Uniformity Enhancement: 56% Intercooler Intake Hose: Pressure Drop Reduction: 20% Commercial Vehicle HVAC Duct:... Pressure Drop Reduction: 25 % Flow Split Enhancement: 6% Courtesy Opel 9

10 TOSCA Fluid Feature Overview TOSCA Fluid.topology Version 2.2 features Reduction of flow recirculation and vortices by topology optimization of the flow domain Reduction of the pressure drop and related phenomena Efficient, fast optimization by direct runtime coupling of the optimization to the CFD solver Support of STAR-CD V4.0x solver with.ccm /.ccmg databases STAR-CCM+ V6 solver ANSYS Fluent V12 solver Parallel operation support GUI and pre/post processing interfaces LinuX x86_64 Support 10

11 TOSCA Fluid Key Notes (1) New and unique technology for fast and efficient topology optimization of internal fluid flow systems Simulation driven design, fast and easy design optimization impacting all development stages Use of your favorite CFD-solver and existing models for optimization, no parameterization necessary Optimization process Unmatched efficiency for large, real world industrial applications High innovative strength due to new and potentiality inspiring designs and large solution spaces Resulting design proposal (60% less pressure drop compared to a standard design) 11

12 TOSCA Fluid Key Notes (2) Based on Daimler Technology initial Design Technical and support hotline by experienced CAE and optimization staff Easy setup of optimization problems using the graphical user interface (GUI) available Designspace No model parameterization is required Straight forward pressure drop reduction (noise diminution), flow homogenization and several other optimization tasks Optimization General reduction of development time and development cycles which saves your costs New conceptual Design, p 26 % 12