- Design Optimisation of a Strongly Interacting Diffuser Pump Stage
- Design of an Hydraulic Turbocharger Pump and Turbine for Reverse Osmosis Desalination Plant Applications
- Design of a Double-Suction Volute Pump
- Multi-Objective Optimisation of a Centrifugal Pump Stage by Means of Design of Experiment Coupled with Inverse Design Method
- Design of an Inducer Pump with High Suction Performance and Backflow Control
- Design of an Automobile Torque Converter
- Hydraulic Design Optimisation of a Torque Converter
- Design of a 3 Stage Axial LP Turbine for Aeroengine Applications
- Design High Performance Centrifugal Compressor Impellers
- Design of a Cooling Fan
- Design of a Double-Suction Fan Stage
- Redesign of an Industrial Compressor Stage
- Design of Refrigeration Compressor Stage in R134a
- Design High Efficiency Impellers with Splitter Blades
- Design High Performance Centrifugal Compressor Vaned Diffusers
- Design High Performance Axial Turbine Stages with More Uniform Exit Flow
- A Fast 3D Inverse Design Based Multi-Objective Optimization Strategy for Design of Pumps
- Optimization of Pump Blades Using Three Dimensional Inverse Design Method
- Hydrodynamic Design System for Pumps Based on 3-D CAD, CFD and Inverse Design Method
- Choice of Optimum Blade Loading in Application of 3D Inverse Design to Design of Pumps and Fans.
- Multi-Objective Design Optimization of a Mixed-Flow Pump
- Design of Mixed Flow Pump Stage Using TURBOdesign1 and CFD Code, Hyosung
- Development of New Vertical Line Shaft Pumps
- Application of TURBOdesign1 for the Compact Design of Rocket Engine Turbopump - JAXA
- CDI Marine Applies TURBOdesign1 & CFD to Design a Marine Waterjet
- Application of 3D inverse design methods for development of centrifugal pumps at Grundfos
Design of High Performance Pump Stage
TURBOdesign1 can be used in the design of high efficiency and compact pump stages. The flow field within a pump diffuser has been improved by controlling three-dimensional pressure fields in the blade passage using TURBOdesign1. The flow separation, often observed on the hub surface of a highly loaded diffuser, has been eliminated. See Figures 1 to 4.
Fig.1: CFD results of the conventional diffuser pump stage. A large separation vortex exists at the hub-suction surface corner of the diffuser, which causes poor overall performance of the machine.
Fig.2: CFD results of a diffuser pump stage obtained by TURBOdesign1. The separation vortex, observed in the conventional diffuser, has been completely eliminated.
TURBOdesign1 enables designers to control secondary flows in an impeller by directly specifying the blade loading distribution and optimizing the three-dimensional pressure fields to improve machine performance. The blade shapes of the impellers obtained by TURBOdesign1 are significantly different from those of the corresponding conventional impellers, see Figures 5 and 6. Such a unique blade shape is difficult to obtain by a conventional design approach even if a large number of CFD predictions are repeated.
Fig.5: Blade angle distribution of the impeller obtained by TURBOdesign1, which is too unique to be reached by the conventional approach.
Fig.6: Blade angle distribution of the conventional impeller. Smooth distribution does not guarantee favourable flow fields.
Fig.7: Comparison of head-flow characteristic curves. Pump head was significantly increased due to the loss reduction in the pump stage obtained by TURBOdesign1.
The high performance pump stage was manufactured and tested in a pump loop test facility. Experimental validation confirms the improvements in stage efficiency by 5.3 points. The matching between the impeller and the diffuser can be achieved at the specified design flow rate without any empiricism.
Design of Super Compact Pump Stages
Flow field optimization by TURBOdesign1 has enabled significant improvements in both stage efficiency and suction performance compared to the State of- the-Art conventional design for the similar machine size.
Super compact design is also possible by the careful control of the three-dimensional flow fields by TURBOdesign1. In fact by using TURBOdesign1 more than 50% reduction in volumetric machine size has been achieved with minimum penalty in stage efficiency and the suction performance.
TURBOdesign1 enables challenging and innovative design beyond our experience.
Fig.10: Pressure contours of CFD results for the high performance pump stage obtained by TURBOdesign1.
Fig.11: Comparison of suction performance curves. The application of TURBOdesign1 enables extremely high peak suction specific speed without efficiency penalty.