Advanced Hydrodynamic Design of Vertical Diffuser Pumps Using Computational Fluid Dynamics

2002 ◽  
Author(s):  
Kristis V. Michaelides ◽  
Antonios Tourlidakis
Keyword(s):  
Development Process ◽  
Three Dimensional ◽  
Detailed Examination ◽  
Product Development Process ◽  
Design Parameters ◽  
Factors Affecting ◽  
Performance Predictions ◽  
Overall Performance ◽  
Industrial Use ◽  
Optimisation Procedure

The current paper describes an investigation into the industrial use of CFD and other computational technologies for the three-dimensional hydrodynamic design of vertical diffuser pumps and outlines the complete product development process. Detailed description of the complete design process is described and numerous CFD predictions of the flow are presented with detailed examination of the several factors affecting the hydrodynamics of impeller and diffuser and staging of the pump. Furthermore, variations of important geometrical design parameters based on the design optimisation procedure are discussed in accordance to the CFD results. The capabilities of the 3-D hydrodynamic design through CFD and the importance of the three dimensional blade geometry are demonstrated by the fact that two different pump impellers were designed based on strict design constraints affecting their basic dimensions. Finally, an overview of the functional prototypes development is described and comparisons are carried out between overall performance predictions and experimental results.

Research on the Reliability of Box for Gear Test Bed

2011 ◽  
Vol 121-126 ◽  
pp. 1744-1748
Author(s):  
Xiang Yang Jin ◽  
Tie Feng Zhang ◽  
Li Li Zhao ◽  
He Teng Wang ◽  
Xiang Yi Guan
Keyword(s):  
Power Flow ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Design Parameters ◽  
The Finite Element Method ◽  
Test Bed ◽  
Kinematics Simulation ◽  
Beveloid Gears ◽  
Overall Performance

To determine the efficiency, load-bearing capacity and fatigue life of beveloid gears with intersecting axes, we design a mechanical gear test bed with closed power flow. To test the quality of its structure and predict its overall performance, we establish a three-dimensional solid model for various components based on the design parameters and adopt the technology of virtual prototyping simulation to conduct kinematics simulation on it. Then observe and verify the interactive kinematic situation of each component. Moreover, the finite element method is also utilized to carry out structural mechanics and dynamics analysis on some key components. The results indicate that the test bed can achieve the desired functionality, and the static and dynamic performance of some key components can also satisfy us.

scholarly journals Metodologia de projeto ergonômico aplicada ao desenvolvimento de bancos de arremesso de atletas paralímpicos brasileiros

2018 ◽  
Vol 11 (1) ◽  
pp. 37
Author(s):  
Carla Patricia Guimarães ◽  
Marcio Ribeiro Oliveira ◽  
Marcos Garamvölgyi Silva ◽  
José Luiz Lamosa
Keyword(s):  
Laser Scanning ◽  
Development Process ◽  
Three Dimensional ◽  
Project Team ◽  
Product Development Process ◽  
Prototype Development ◽  
Logical Sequence ◽  
Institute Of Technology ◽  
Three Dimensional Models ◽  
Design Division

The objective of this article was to present and describe the project methodology implemented in the development of five throwing frames for paralympic athletes. The process was divided into project different phases / stages, which, although following a logical sequence of development, include activities performed simultaneously. The athletes and technicians were invited to participate in technical meetings with the research group at INT. These technical meetings were held throughout the project, so that athletes and their technicians could interact with the project team of the Three-Dimensional Models Laboratories (LAMOT) and Ergonomics Laboratory (LABER) athe Industrial Design Division at the National Institute of Technology. 3D motion captured and laser scanning captured with 1D anthropometric measurements were collected in order to provide information to the bank usability designer and anthropometric dimensions of the athletes. With this information, the LAMOT / DVDI project team developed project alternatives that were presented to the athletes and technicians. The chosen project frame alternative allowed greater rigidity to the seat. Athletes participated in all subsequent stages of prototype development and final testing in use. The conclusion was that the methodology provided a logical and comprehensible structuring of the product development process for all the actors involved in the project, even from different areas of activity, and thus, could contribute in a harmonic and productive way to the final result.

Virtual powertrain development

2020 ◽  
Vol 234 (14) ◽  
pp. 3288-3301 ◽  
Author(s):  
Peter Fietkau ◽  
Bruno Kistner ◽  
Jérôme Munier
Keyword(s):  
Electric Motor ◽  
Development Process ◽  
Individual Component ◽  
Product Development Process ◽  
Design Parameters ◽  
Structural Components ◽  
Development Environment ◽  
Load Spectra ◽  
Digital World ◽  
The Individual

This article presents the new system of virtual powertrain development introduced at Porsche AG that incorporates all phases of the development process, as well as all components and simulation disciplines. The system enables a powertrain in its entirety to be designed and tested virtually. Most activities can be planned and budgeted at the beginning of the project, and interactions that occur are systematically taken into consideration. The hardware-driven development process used until now is completely transmitted to the digital world. Powertrain development is divided into thirteen digital powertrain systems (DPSs), which contain different components and disciplines and are developed throughout the entire product development process. For each DPS, tasks, links, time schedules, reporting scopes, and responsibilities are precisely defined. Finally, a digital vehicle prototype is built from several DPSs. The results are aggregated in several stages, ensuring that core statements are consistently incorporated at all assessment levels, from the individual component to the overall vehicle. Furthermore, this article discusses in detail DPSs that are especially important for battery electric vehicles. For most of the examples, the powertrain of the Porsche Taycan is used. The Driving Performance and Load Spectra DPS provide the necessary design parameters for a new drive system. In the Electric Motor DPS, active parts of the electric motor are designed and all structural components are verified. In the Transmission DPS, all gear set parts are designed and verified. In the Cooling, Lubrication and Actuation DPS, all temperatures are calculated and the lubrication circuit is designed. The Powertrain Dynamics DPS provides information on powertrain vibrations. The article closes with a look at future development trends. The aim is not just to design and verify components but also to completely virtualize function and software development. Therefore, this article presents a system for creating and using a virtual development environment and tracking the results.

scholarly journals ENGINEERING DESIGN FROM A SAFETY PERSPECTIVE

2012 ◽  
Author(s):  
Christian Iorga ◽  
Alain Desrochers ◽  
Cécile Smeesters
Keyword(s):  
Engineering Design ◽  
Development Process ◽  
Product Development Process ◽  
Function Parameter ◽  
Design Parameters ◽  
Stochastic Methods ◽  
Loss Of Function ◽  
Statistical Nature ◽  
Deterministic Method ◽  
Product Industry

Engineering design is an iterative decision- making process involving interactions between three elements: geometry, materials and loads. The objective is to provide an optimum combination of these design parameters. Unfortunately, the absolute optimum can rarely be achieved because the design criteria typically place counter opposing demands and uncertainties must be accommodated. To this end, the integration of both deterministic and stochastic methods into the product development process is encouraged. The deterministic method allows designers to calculate a design safety factor based on the uncertainties of a loss-of-function parameter and a maximum allowable parameter. Stochastic methods are based on the statistical nature of the design parameters and focus on the reliability of the design. Links between these elements will thus be emphasized and supported with examples from the recreational product industry.

Consideration of Social Impacts During the Early Stages of Product Development for Sustainable Design

2020 ◽  
Author(s):  
Hong Jia ◽  
Christopher A. Mattson ◽  
Gabrielle Johnson
Keyword(s):  
Product Development ◽  
Social Impact ◽  
Development Process ◽  
Social Dimension ◽  
Product Development Process ◽  
Design Parameters ◽  
Sustainable Solutions ◽  
Early Stages ◽  
Design Engineers ◽  
The Social

Abstract Besides the explicit economic and environmental impacts, the product development process also produces an implicit social value — known as social impact. To help product designers better understand and plan for the social impact that their product may have, we present a social impact checklist table. This checklist table was constructed after a simple study was conducted on the design and reuse of corrugated cardboard. The checklist table provides the designer the opportunity to more deeply consider eleven social impact categories, map those categories to key indicators, and ultimately design parameters that influence social impact. We introduce this checklist table at the early stages of the product development process, aiming to make the otherwise implicit notion of social impact more explicit and recognizable. The checklist table has the potential to make the social dimension of sustainability more accessible to design engineers; they can then better conceive of sustainable solutions and create products that generate positive social impact.

Design Parameter Investigation in Customer-Oriented Drive Train Development Using Human Sensation Modeling Tools

2009 ◽  
Author(s):  
Albert Albers ◽  
Sarawut Lerspalungsanti ◽  
Tobias Du¨ser ◽  
Sascha Ott
Keyword(s):  
Development Process ◽  
Friction Pair ◽  
Drive Train ◽  
Product Development Process ◽  
Design Parameters ◽  
Simulation Methods ◽  
Modeling Tools ◽  
Driving Situation ◽  
Comfort Evaluation ◽  
Start Up

The integration of customer demands in the early phase of product development process is one of most important aspects in the field of automotive engineering. In addition to a customer survey which generally requires drive tests of the real prototypes, methods based on the virtual product design have been applied more and more frequently. Due to the potential of simulation methods, the development time can be shortened and the costly prototypes as well as the time-consuming drive tests can be partially excluded. Earlier studies have demonstrated a capability of the developed methods and tools to support the customer-oriented drive train design by means of the prediction of the subjective comfort evaluation. In this case, the potential customers are classified into three groups based on their comfort expectation and style of driving. The rating from the customer point of view is accordingly achieved by modeling of the human sensation from the way the individual passengers make their evaluation by means of the Artificial Neural Networks (ANN). The objective of the current research is to implement the developed methods in the design phase of the drive train development process to enhance the customer comfortability. This article presents a systematic approach to apply the simulation methods in order to investigate different design parameters of the drive train and to determine the consequent customer comfort evaluation during each driving situation, the vehicle start-up as an example. For this purpose, the modification of the elaborated vehicle model is carried out by variation of the comfort-relevant design parameters, such as the friction coefficient gradient of the clutch friction pair, the mass of inertia and the damping of the components, like the dual mass flywheel. Depending on each drive train configuration and driver demand on the vehicle start-up, the simulated driving situation with different effects on the occurrence of the rotary vibration is evaluated by means of the human sensation model. This is developed during the drive tests on the basis of driver rating behavior. Based on the predicted comfort evaluations from different types of customer, the decisions made by the developer such as the determination of the clutch disk property or the damping setting of component can be efficiently supported during the drive train design. Hence, a new drive train concept can be tested and improved in such a way that the satisfaction of a target customer group from the first prototypes is obtained.

MBD Based Automotive Products Process Planning Technology

2011 ◽  
Vol 88-89 ◽  
pp. 570-575 ◽  
Author(s):  
Qiu Zhong Zhou ◽  
L.Y. Deng
Keyword(s):  
Process Planning ◽  
Process Design ◽  
Process Model ◽  
Development Process ◽  
Planning Process ◽  
Three Dimensional ◽  
Product Development Process ◽  
Transfer Method ◽  
Product Definition ◽  
Process Mode

Process planning is the important link in connection of automotive product development process design and production, and the expression and transfer of process planning information is a key affecting the development process. For promoting the process planning viability, this paper puts forward the idea of MBD based automotive products process planning information expression and its transfer method. The connotation and essence of MBD which completely expresses product definition with the integrated three-dimensional entity model and use the label and attributes solution to express the products non-geometrical manufacturing information in three-dimensional tagging, is expounded. Based on the analysis of process planning process, the concept of MBD process model and the joint expression way with mark and attributes to solve the expression of process planning information in the three-dimensional entity model was put forward. At the same time, the MBD based process planning process was expounded, as well as the expression method of all kinds of process planning information in MBD process mode.

Using Site-Based Techniques to Evolve the Product Development Process in Manufacturing Industries

1998 ◽  
Vol 42 (13) ◽  
pp. 994-998
Author(s):  
Eric N. Wiebe
Keyword(s):  
Computer Aided Design ◽  
Development Process ◽  
Three Dimensional ◽  
Product Data Management ◽  
Manufacturing Industries ◽  
Product Development Process ◽  
Furniture Industry ◽  
Manufacturing Operations ◽  
Depth Analysis ◽  
Aided Design

Many manufacturing industries, especially small to medium-sized companies, are in the process of exploring the move from two-dimensional computer-aided design (CAD) technologies to three-dimensional CAD tools interfaced with product data management (PDM) systems. For many companies, their current organizational structure is not well suited to fully leverage the capabilities of new CAD/PDM technology. This paper explores the author's experiences working in the residential furniture industry, helping companies successfully integrate CAD/PDM systems into their engineering and manufacturing operations. Of particular focus was the role user-centered, site-based techniques played in helping one company with this integration process. Both current and future scenarios based on an in-depth analysis of the product developed process were generated and used to help guide an implementation plan for a new CAD/PDM system.

Experience Design Applied to Research

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Andrea CAPRA ◽  
Ana BERGER ◽  
Daniela SZABLUK ◽  
Manuela OLIVEIRA
Keyword(s):  
Information Technology ◽  
Product Development ◽  
Design Process ◽  
Development Process ◽  
Product Development Process ◽  
Experience Design ◽  
Low Resolution ◽  
Design Concepts ◽  
Innovative Products ◽  
Technological Products

An accurate understanding of users' needs is essential for the development of innovative products. This article presents an exploratory method of user centered research in the context of the design process of technological products, conceived from the demands of a large information technology company. The method is oriented - but not restricted - to the initial stages of the product development process, and uses low-resolution prototypes and simulations of interactions, allowing users to imagine themselves in a future context through fictitious environments and scenarios in the ambit of ideation. The method is effective in identifying the requirements of the experience related to the product’s usage and allows rapid iteration on existing assumptions and greater exploration of design concepts that emerge throughout the investigation.

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