Application of Computational Fluid Dynamic for Hydraulic Design

2011 ◽  
Vol 121-126 ◽  
pp. 578-582
Author(s):  
Li Ying Wang ◽  
De Hua Wei
Keyword(s):  
New Product Development ◽  
Computational Fluid Dynamic ◽  
Design Method ◽  
Fluid Dynamic ◽  
New Product ◽  
Actual Condition ◽  
Hydraulic Machinery ◽  
Traditional Design ◽  
Hydraulic Design ◽  
Simulated Flow

This paper studies the modern design methods of hydraulic machinery by the use of Computational Fluid Dynamic (CFD), the design method not only makes up the shortcomings of the traditional design method, but also can be compared on the computer which can save a lot of trial and testing costs in new product development. Form the velocity distribution and pressure distribution of turbine, the example shows, the simulated flow field using CFD software is in agreement with the actual condition and it basically meets the requirements of design.

Application of Accuracy Engraving Technique in the Complex Curved Surface Mould Processing

2012 ◽  
Vol 605-607 ◽  
pp. 133-136
Author(s):  
Xin Liu ◽  
Wei Fan
Keyword(s):  
New Product Development ◽  
Design Method ◽  
New Product ◽  
Curved Surface ◽  
Rapid Manufacturing ◽  
Milling Machine ◽  
Traditional Design ◽  
Nc Milling ◽  
The Cost ◽  
Plastic Mould

The advantages of the precise carving techniques in complex curved surface mould processing are studied. The small tools of carved machine can realize the small size processing which is unachievable for CNC and NC milling machine. The method using accuracy engraving machine to manufacture complex curved surface mould with small features is proposed, so the speed of mould processing is accelerated, the cost of new product development is decreased, the rapid manufacturing is realized and the traditional design method using only CNC and milling machine is improved. Finally, this method has been applied to the processing of a plastic mould and the application method is expounded.

On the influence of helix angle and face width on gear windage losses

2015 ◽  
Vol 230 (7-8) ◽  
pp. 1101-1112 ◽  
Author(s):  
Nicolas Voeltzel ◽  
Yann Marchesse ◽  
Christophe Changenet ◽  
Fabrice Ville ◽  
Philippe Velex
Keyword(s):  
Computational Fluid Dynamic ◽  
Fluid Dynamic ◽  
Helix Angle ◽  
Spur Gears ◽  
Power Losses ◽  
Flow Rates ◽  
Helical Gears ◽  
Face Width ◽  
Loss Prediction ◽  
Simulated Flow

This paper investigates the windage power losses generated by helical gears rotating in pure air based on experimental results and a computational fluid dynamic code. It is found that the simulated flow patterns are totally different from those calculated for spur gears and that both tooth face width and helix angle are influential. The windage losses derived from Dawson’s and Townsend’s formulae are critically assessed using computational fluid dynamic results thus highlighting the limits of a unique formulation for accurate windage loss prediction. Finally, an analytical approach is suggested which gives good results providing that the flow rates at the boundaries of the inter-tooth domains can be estimated.

Computational fluid dynamic modelling of wastewater ponds to improve design

1995 ◽  
Vol 31 (12) ◽  
pp. 111-118 ◽  
Author(s):  
M. G. Wood ◽  
P. F. Greenfield ◽  
T. Howes ◽  
M. R. Johns ◽  
J. Keller
Keyword(s):  
Computational Fluid Dynamic ◽  
Fluid Dynamic ◽  
Dynamic Modelling ◽  
Design Tool ◽  
Meat Industry ◽  
Cfd Modelling ◽  
Improve Design ◽  
Traditional Design ◽  
Flow Mixing ◽  
New Generation

Wastewater ponds are a popular treatment alternative in Australia, especially in the meat industry. However, increasingly stringent Australian environmental legislation is raising questions about the continued viability of ponds. Traditional design methods do not address the hydrodynamic problems (i.e. short-circuiting) nor can they predict the effects of measures like baffles or repositioning inlets or outlets to improve performance. This is because the microscale interactions between the fluid and solids, and the biological reactions are ignored. This paper presents a tool -- computational fluid dynamic (CFD) modelling and explores its potential as a new design tool for wastewater ponds. FIDAP, a finite element CFD program, is one of the new generation of commercial CFD packages available. This program has been used to qualitatively investigate the hydrodynamics of four pond systems. These models are limited to 2-dimensional (D), steady-state simulations in a laminar flow regime. They form the first step in the process to address the microscale fluid flow, mixing and biology in wastewater ponds. Considerably more modelling and validation work is yet to be done.

Innovation Design Method of Product Base on Materials Innovation Technologies

2012 ◽  
Vol 605-607 ◽  
pp. 271-275
Author(s):  
Yuan Guo ◽  
Xin Shi
Keyword(s):  
Product Development ◽  
Product Design ◽  
New Product Development ◽  
Design Method ◽  
New Products ◽  
New Product ◽  
Future Trends ◽  
Innovative Product ◽  
Positive Role ◽  
Innovative Materials

Proposing the product design method based on innovative materials technology aim to play better the potential of materials’ application and to grasp the future trends of new products development. Combined with the recent typical innovative product cases to demonstrate four innovation design methods: reference, package and adhesion, superposition and integration, variation. These innovation methods’ applications indicate broader prospects of materials’ use that transformed from the state of “material”, the vision and touch of the “quality”, and it also play a positive role in new product development.

scholarly journals Improvement of creativity via the six-steps bio-inspiration strategy

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Sofija Sidorenko
Keyword(s):  
New Product Development ◽  
Engineering Students ◽  
Design Method ◽  
New Product ◽  
Educational Process ◽  
Bionic Design ◽  
Natural Systems ◽  
Product Design Process ◽  
Industrial Designers ◽  
Student Projects

Bionics is a relatively new interdisciplinary science, which synthesizes the knowledge of biology and other sciences. Industrial designers, architects and engineers find the application of principles and methods of bionics efficient for deriving inspiration and improving their creative thinking.Designers explore natural systems by adopting one of the two main bionic strategies: solution-driven or problem-driven approach. The first one deals with abstraction of the principle in biological systems as an inspiration for application in the product design process. The second one searches for a solution in natural systems for already recognized design problems.We adopted the Bi-directional bionic design method proposed by Versos and Coelho and started to implement it in our educational process. Many student projects have been made and important experience achieved. With this research we wanted to emphasize the possibilities and advantages of the bionic strategy and to offer our contribution for the phase of inspiration for a new product development or an improvement of the existing ones. Our main goal was to apply solution oriented strategy for efficient exploring of nature in the phase of searching for inspiration. We propose several steps in the process of exploration of natural systems followed by identification of important natural solutions and a structured way of documentation in order to become more noticeable and observable to attract an attention of designers and engineers. The recognized natural solutions could become a trigger for inspiration for various design solutions. The proposed strategy could be applied in the education of design and engineering students for improvement of their creativity. 

A Tandem Evolutionary Algorithm for Platform Product Customization

2006 ◽  
Vol 7 (2) ◽  
pp. 151-159 ◽  
Author(s):  
George Q. Huang ◽  
L. Li ◽  
X. Chen
Keyword(s):  
Evolutionary Algorithm ◽  
New Product Development ◽  
Design Method ◽  
New Product ◽  
Sensitivity Analyses ◽  
Gantry Crane ◽  
Customer Requirements ◽  
Genetic Operators ◽  
Product Customization ◽  
Increasing Demand

The increasing demand for reduction in time to market has led to new product development methodologies focusing on reuse. Platform product customization emerges as a basic idea for avoiding designing a new product completely from scratch, but reusing a product platform instead. Key dimensions of some modules of the platform can be stretched or shrunk while modules themselves can be swapped to formulate multiple product variants in a family according to specific customer requirements. This paper formulates such a problem of platform product customization as an optimization problem consistent with the manufacturer’s goal in the design of product variant(s) while satisfying customer requirements and design constraints. Optimal customization takes place at the levels of product structure and module parameters. A tandem evolutionary algorithm is proposed for identifying the optimal structural composition and the optimal parameters of the corresponding structure. The encoding schemes and genetic operators for structure and parameter optimization are designed, respectively. A case study of gantry crane customization is given to illustrate how the proposed evolutionary customization design method is used. The effectiveness of the method is also evaluated through a series of sensitivity analyses.

Application of Accuracy Engraving Technique in the Motorcycle New Product Development

2011 ◽  
Vol 230-232 ◽  
pp. 444-447
Author(s):  
Xin Liu ◽  
Hai Qing Du ◽  
Wei Dong Wang
Keyword(s):  
Product Development ◽  
Rapid Prototyping ◽  
New Product Development ◽  
Design Method ◽  
Vertical Direction ◽  
New Product ◽  
Product Size ◽  
Large Size ◽  
Design Requirements ◽  
The Cost

The relative merits of accuracy engraving technique and rapid prototyping technique during processing are discussed. Because the product dimensions are small and the strength of the rapid prototyping sample workpiece in vertical direction is too small to meet the engineering design requirements, the method using accuracy engraving machine to replace rapid prototyping machine to design product with large size and need to assemble like motorcycle cover is proposed. If the product size is too large, it can be split and every part is carved with the accuracy engraving machine, and then they are sticked together to finish the whole part. So the speed of new product development is accelerated, the cost of new product development is decreased, the rapid manufacturing is realized and the traditional design method using only RP machine is improved. This method has been applied to the development for a new motorcycle cover and the application method is expounded.

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