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Advanced Turbomachinery Simulation using STAR-CCM+
STAR-CCM+ provides a unique set of simulation capabilities, which allow for accurate and rapid simulation of turbomachines. These simulation capabilities include conjugate heat transfer analysis, aeroelastic analysis and performance mapping. This presentation will discuss modeling capabilities critical for the industry such as geometry handling, conformal meshing of complex bodies, solution methods and advanced post-processing. Details of how the Harmonic Balance Solver within STAR-CCM+ can be used to perform aeroelastic analysis will be presented. Additionally, case studies will be used to...
The Effects of the Planform Shape on Drag Polar Curves of Wings: FSI Analysis Results
This presentation discusses the preliminary results obtained from the aeroelastic analyses of two half-wing models, with a curved and a swept planform. This work was carried out by the Aerospace Section of the Department of Civil and Industrial Engineering of Pisa University. As demonstrated in previous papers on the topic of rigid models of wings, the curved planform causes a variable angle of sweep along the wing span, resulting in a greatly reduced wave drag at transonic flight conditions. The present numerical comparisons between a curved and traditional swept wing (with the same aspect...
Aeroelastic Workshop: The Validation of Aeroelastic Simulations using STAR-CCM+ coupled to Abaqus
The purpose of this study is to validate STAR-CCM+ accuracy in aeroelastic applications. The benchmark examined here is from the Aeroelastic Prediction Workshop. The High Reynolds Number Aerostructural Dynamics (HIRENASD) wing is chosen for this verification study as a good distribution of unsteady pressure measurements, deflection measurements and balance loads measurements at transonic conditions with realistic flight Reynolds numbers. The CFD geometry has been combined from IGES files and the CGNS mesh obtained from HIRENASD website. Based on this geometry, a polyhedral mesh has been...
Fluid-Structure Interaction of a Surface Effect Ship Bow Seal & a Free Surface
A Surface Effect Ship (SES) has a pair of side hulls with flexible seals fore and aft which contain the cushion pressure provided by lift fans. Due to the highly flexible nature of these seals, they interact quite dynamically with the free surface. A series of model tests were performed at the University of Michigan in order to aid the understanding of this interaction and these tests are being simulated in this presentation. This simulation employs the co-simulation engine coupling Abaqus with STAR-CCM+ first implemented in version 5.06. Early versions of this tool used explicit (loose)...
The Validation of Fluid-Elastic Instabilities in a Flexible Rod Bundle using STAR-CCM+ coupled to Abaqus
Fluid-elastic instabilities of a flexible rod bundle in turbulent water cross flow have been well studied in laboratory scale experiments. As a validation, unsteady RANS simulation in STAR-CCM+ are coupled to Abaqus via co-simulation and the results compared to experiments. Because of the strong rod-water coupling, this validation represents a complex test for implicit coupling technique realized in STAR-CCM+. STAR-CCM+ and Abaqus models were constructed based on the description and dimensions provided in the reference documentation.* The rod fastening conditions and properties were tuned to...
Simulation of Selective Catalytic Reduction using DARS 1D Tool
This presentation illustrates a new application of the previously developed 1D transient DARS Catalyst model for the simulation of a Selective Catalytic Reduction (SCR) catalyst. Initially demonstrated for NOx-Storage Catalyst (NSC), the DARS Catalyst model uses a single-channel or a set of representative channels for the simulation. This model is fully valid and employed further for the SCR catalyst. Each channel is discretized into a number of cells. Each cell is treated as a Perfectly Stirred Reactor (PSR) with a thin film layer for washcoat treatment. Three global parameters are used to...
Structure, Extinction & Ignition of Non-Premixed Flames in the Counterflow Configuration
Counterflow burners consist of steady, axisymmetric, laminar flows of two counterflowing reactant streams toward a stagnation plane. These burners can be used to experimentally study and develop detailed chemical mechanisms of combustion under a wide range of conditions. Global flame parameters such as the critical limits of extinction and autoignition, as well as flame structure, including flame temperatures and species concentrations can be measured and tested against established reaction mechanisms using 1D numerical model with known conditions at the duct exits. This presentation is a...
Reacting Flow Applications in STAR-CCM+
We have been expanding our application coverage for reacting flows that require coupling of different processes with a wide-range of length and time scales. We capture these interactions by using a combination of online as well as offline computations that enables us to perform advanced reacting flow calculations incorporating finite-rate chemistry while keeping the computational time manageable. Our models have been extended to work in multi-phase as well as with segregated and coupled flow solvers. Examples from chemical process and combustion applications will be shown that will include...
Integrating Filtration Mechanism with a 3D Diesel Particulate Filter (DPF) Model using STAR-CCM+
A 3D CFD model is developed for analysis of transient soot filtration processes in a conventional wall-flow type Diesel Particulate Filter (DPF). The primary objective of this study is to quantitatively predict the local values of soot filtration parameters, such as porosity, permeability, collection efficiency and deposited soot mass, within isotropically discretized computational domains in the multi-layered filter wall region. Standard CFD codes do not have ability to generate structured meshes with ordered cell index nor allow mathematical recursive operation using user field functions...
The Italian challenge at the Little America’s Cup 2013: Design and analysis method for the C Class prototypes
The Italian challenge at the Little America’s Cup 2013: Design and analysis method for the C Class prototypes

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