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Engineering Design Services

Engineering Design Services is at the core of what we do at our BroadTech Engineering office in Singapore.Engineering Design Services

Featured Case Studies of Our Engineering Design Services

Design and development of De-silting basin for Seawater Intake System

Objective: The objective is to design a basin to make the sea water silt free for reliable operations of cooling water pumps at intake system in thermal power plants.
Methodology/Approach: Pro E is used for CAD modeling. Fluent solver is used for flow simulations and analysis. Laminar and turbulent (k-epsilon) studies were conducted for observing the de-silting mechanism through velocity flow profiles.
Outcome and Conclusion:
Developed an efficient basin for the de-silting process based on HIS guidelines and CFD flow analysis.
The design was implemented in a 3600MW thermal power plant in India.

Bluff body with Flapping Appendages

Objective: The objective of the study was to reduce the wake-induced hydrodynamic forces of a cylindrical body using flexible flapping appendages
Methodology/Approach:
Using DNS model the hydrodynamic forces for a body without and with flapping appendages were computed. Parametric investigation for various flexibility was also conducted
Outcome and conclusion:
Knowledge about the influence of flexibility in the aspects of hydrodynamics forces was achieved.
Documented as a report and submitted to an international journal.

CFD study of Oscillating Cylinder

Objective: The objective is to compute hydrodynamic forces of an oscillating cylinder at high Reynolds number and observe the vortex dynamics of an oscillating body.
Methodology/Approach:
Using commercial CFD package STAR CCM+, the investigations were conducted
RANS approach with k-epsilon turbulence model is used for the investigation
Outcome and conclusion:
Computed hydrodynamic forces had a satisfactory match with the experimental results
Vortex dynamics and vortex modes were observed. Results were published in an international conference.

Geometry Shape Optimization of a Floating platform

Simulation objective:
Suppress undesired motions and reduce drag forces of the semi-submersible deployed in the harsh ocean environment.
Methodology/Approach:
Implement novel flow control strategy, such as active and passive techniques
Adopt Large-eddy simulation (LES) turbulence model to compute the hydrodynamics and flow field of semi-submersible in replicating practical ocean conditions.
Outcome and Conclusion:
80% and 50% reduction of undesired motions and drag forces owing to the implementation of novel flow control strategy. We have published in international conferences and journal. The design has been implemented by offshore industry.

Overview

About Us

BroadTech Engineering is a Leading Engineering Simulation and Numerical Modelling Consultancy in Singapore.
We Help Our Clients Gain Valuable Insights to Optimize and Improve Product Performance, Reliability, and Efficiency.

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1. Powerful Simulation Software Tools

1. Powerful Simulation Software Tools

2. Simulation Consultants with Extensive Research & Professional Experience

2. Simulation Consultants with Extensive Research & Professional Experience

3. Simulation projects Completed in a Timely and Cost-effective Manner

3. Simulation projects Completed in a Timely and Cost-effective Manner

4. Proven Track Record

4. Proven Track Record

5. Affordable

5. Affordable

6. Full Knowledge Transfer

6. Full Knowledge Transfer

CFD analysis of different models of Twin-Screw Compressor manufactured by a company in Taiwan

Objective: CFD analysis of different models of Twin-Screw Compressor manufactured by a company in Taiwan. This includes models such as Lobed Pump, External Gear Pump, Scroll Compressor, Internal Gear Pump, Ge-rotor.
Approach: The numerical simulation is carried out by taking the advantage of fluid flow analysis function of ANSYS WORKBENCH. In this approach, the static grids were generated with ANSYS meshing while the rotating and deforming ones resulted from a customized grid generator, TwinMesh, from CFX-Berlin.
The set of generated grids are eventually coupled with a CFD solver for further analysis. Different parameter such as Pressure variation, induced gas loads and torques, etc are calculated and imported into ADAMS software for further vibration analysis of the machine.
Results: CFD analysis finished resulted in a conclusive Vibration- diagnosis

Numerical Methods for Compressible Flows 

Objective: Deep study about compressible flow computational resolution is carried out.
Approach: Principal characteristics and features presented in mentioned
flows are described, including a review of most usual shock waves and discontinuities observed in nature. Beyond the physics, remarkable ingredients of Godunov method for solving hyperbolic equations are studied and its limitations are highlighted. Different
Riemann solvers, limiter functions and order of accuracy are implemented in 1D and 2D in-house codes with both MUSCL and WENO approaches. In order to verify given solver and analyze how different flow features are represented, some well-known
problems are solved and compared to results found in the literature. Shock tube problem is implemented for the 1D solver, while radial explosion, frontal facing step, and double Mach reflection cases are studied for the 2D solver.
Results: Robust results have been provided for all methods tested, finding the most accurate results for HLLC solver and no significant difference between slope limiters. Some problems have been faced when trying to capture weak flow features, being needed finer grids and higher order methods that were not inside the scope of the present study.

Numerical Methods for Partial Differential Equations and High-Performance Computing

Objective: Linear advection equation is studied with the aim of analyzing Upwind, Forward Time Central Step (FTCS), Lax-Friedrichs, Lax-Wendroff and MacCormack explicit methods.
Another key aim of present studies is to implement a parallel code for given problem and measure its performance compared to serial code.
Approach: All numerical schemes are treated in terms of accuracy, consistency and stability and numerical effects as truncation error or solution dissipation and dispersion are brought to examination.
Simulations are performed in Fortran language, where different parametric studies are carried out. Different CFL conditions, grid refinement lives, final times and scalar fields are studied quantitatively and qualitatively by means of graphs and tables. Convergence to a solution as CFL condition is approached, the number of nodes is increased and final time is decreased is proved.
Both results and code structures and strategies are clarified through descriptive flow charts.
Results: Highest accuracy is obtained with Lax-Wendroff and MacCormack, that lead to the same results for linear problems, while FTCS methods are unconditionally unstable.
Finally, improvement in terms of computational time is achieved through a parallel code, but the larger computational cost is desired in order to be more efficient and worth it.

Air-directivity optimization on Automotive Windshield

Objective: Our client was part of the development team of a particular car line. We were tasked to optimize the amount of airflow hitting the windshield.
Approach: The approach we used begins with validating an initial design prepared by the designers. Once the simulation has been run and based on the post-processing results, suggestions are given to the designers to improve the performance. This loop of designing and validating goes on till an optimum solution is found.
But this is often cumbersome and we used Optimate+, a tool used for optimization purpose. This was done after a certain performance level had been achieved. This involved specifying the design goal (mass flow rates through the vents, speed of air flow etc) which need to be achieved and the design elements which could be altered ( in this case vent blade angle, length, and width of the blades etc). Each goal is to give a certain weightage.
The tool prepares a list of simulation cases to be run which would alter the design parameters into different permutations and combinations to achieve the desired goal.
Results: The results from these simulations were very useful in selecting an optimum solution for the specified targets. All this also involved discussing with colleagues in Sindelfingen, Germany and Pune, India. The designers then checked the feasibility of the proposed design and came up with design versions closer to the optimum design selected through our simulations. This design was again validated in our simulation to check if it meets the required targets.
Although this is one effective way of selecting an optimum design, there is always scope to use one’s creativity to come up with a design which would yield an optimum result.

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If you are still interested in learning more about our Engineering Design Services and see what it can do for you, call us now at 81822236 for a no obligation discussion of your needs.
Our friendly consultants will be happy to answer any of your queries and understand more about your needs and requirements.
Alternatively, for quote request, simply email us your technical specifications & requirements to info@broadtechengineering.com