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The presentation will be divided in the following sections: 1. Cervelo Product Line Cervelo's product line description and the importance of aerodynamics. 2. New Methodology With the success of the aerodynamic development of the P5, Cervelo is looking to implement the same methodology to the rest of the product line. 3. Cervelo Aerodynamic Development How was the previously defined methodology applied to a new product and the benefits in terms of ideas and turnaround time. 4. Future work A description of the opportunities that STAR-CCM+ has been able to open for Cervelo.
A comprehensive methodology has been developed to accurately simulate the functioning of air induction system for automobiles in STAR-CCM+. In this system, great emphasis has been placed in the physics of operation of air-filter (aids in restricting contaminants) and Mass Air Flow Sensor (MAFS) (measures the mass flow rate of air). Due to the unavailability of the flow properties in literature or with the manufacturer, the parameters porous viscous resistance, porous inertial resistance and porosity required for setting up porous medium (air-filter) were obtained from detailed experiments...
Behr GmbH & Co. KG is a leading supplier in the automotive industry in the field of thermal management. Radial blowers are a central component of the air-conditioning system of a passenger compartment. The target for the development of a radial blower is to increase the efficiency of the blower while reducing the noise level. This enables the provision of adequate air flow in all operating points. For supporting the development of radial blowers a CFD method based on transient DES simulations with STAR-CCM+ was developed. The development of the method was accompanied with various...
The conflicting requirements of better fuel economy, higher performance and lower emissions from an automobile engine have brought many new challenges that require development teams to look beyond conventional test and seek answers from simulations. One of the relatively unexplored areas of development where frictional losses have not been completely understood is the flow in the crankcase. Here computational engineering can play a significant role in analyzing flow field in a hidden and complex region where otherwise testing has serious limitations. Flow simulation in the crankcase poses...
InDesA operates a suite of virtual test benches for automotive auxiliary components, such as fans, pumps, compressors and heat exchangers. The objective is to speed up design iterations by verifying CAD designs directly by virtual performance testing and without the need of building prototype components for physical bench testing. As automotive components from suppliers are integrated into larger systems this is done within the OEM’s development process and software environment. Consequently the component’s performance data must be adapted to suit the requirements of other simulation...
The development of new generations of diesel engines focuses on the engine properties (downsizing), fuel consumption and performance. New engines must satisfy the new legislation, regional and state requirements in term of NOX, CO2, particle emissions (various emissions standards EUR5, EUR6…). A new cooling system, named Air Intake Module (AIM), has been developed to satisfy and achieve these objectives. A Water Charge Air Cooler (WCAC) (or charge air intercooler) is fully integrated in air intake manifold in order to cool the charge air from turbo, also to manage the Exhaust Gas Recirculated...
In this presentation the overset grids methodology implemented in STAR-CCM+ will be first described, including its distinct features compared to similar approaches known from literature (like applicability to arbitrary polyhedral grids and implicit coupling of all grids). Next the access to this feature through the user interface will be explained. The advantages of overset grids compared to alternative approaches when performing parametric studies or simulating motion of bodies relative to each other will also be discussed. Several examples of the use of overset grids for both steady-state...
A 39m catamaran operating near the critical hump speed of 18 knots has been optimized through parametric variation. Design objectives included the quality of the flow on the propeller plane and the required power. The catamaran, which was originally designed for a much higher speed of 32 knots, already showed a relatively good performance for the new design speed. Applying STAR-CCM+ in combination with the parametric design and optimization platform FRIENDSHIP-Framework allowed a very economic adjustment, keeping the hull form mostly unchanged. The enhanced flow on the propeller plane was...
Part of the art of engineering is in deciding exactly how much complexity can be excluded through modeling assumption, without reducing the overall quality of the prediction. In fact, at it's purest, engineering might be described as the "art of simplification through modeling approximation", rendering apparently intractable physics problems into neatly packaged engineering solutions. By making the correct modeling assumptions you can accurately predict how an abstract design will perform under a range of real world operating conditions. Make the wrong assumptions and your simulation results...
Advanced features of STAR-CCM+, such as Volume Of Fluid, DFBI and overset grid techniques have made it possible to simulate extreme waves and their interaction with floating structure to provide essential design information such as wave run up, air gap, green water and wave impact load. However, the application of the Numerical Wave Tank (NWT) for floater design remains challenging due to its computational cost, especially for the simulation of the floater response in irregular waves. Simulation of irregular waves by a NWT requires a computational domain large enough to simulate the nonlinear...

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