Investigation of the Trailing Edge Modification Effect on Compressor Blade Aerodynamics Using SST k-ω Turbulence Model

Kaewbumrung, Mongkol; Tangsopa, Worapol; Thongsri, Jatuporn

doi:10.3390/aerospace6040048

Cited by 17 publications

(17 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both models had 2 circular outlets with radius of 10 mm located at a depth of 36.65 mm from the tank edge. The water in the pipe prior to entering inlet and outlet was designed to have a length of 3 cm to prevent it from backflowing and for faster convergence calculations [29]. We modelled that the particles that we wanted to wash were spherical in shape, were Cr 2 O 3 particles, and have a radius of 5 µm.…”

Section: Cfd Settingmentioning

confidence: 99%

A Novel Ultrasonic Cleaning Tank Developed by Harmonic Response Analysis and Computational Fluid Dynamics

Tangsopa

Thongsri

2020

Metals

Self Cite

View full text Add to dashboard Cite

The manufacturer of an ultrasonic cleaning tank (UCT) received advise from a customer to seek the cause to why the UCT could not clean their products effectively and develop a novel UCT to replace the conventional model. This UCT had a capacity of 10 L, a frequency of 28 kHz, four horn transducers, and a total power of 200 W. To resolve that problem and respond to customers’ needs, we presented new methods to develop the UCT using the harmonic response analysis (HRA) and computational fluid dynamics (CFD) to simulate the cleaning process which occurred within the UCT based on the actual conditions. Results from the HRA showed that the acoustic pressure in a problematic UCT was low, resulting in a smaller cleaning area, which was consistent with the results from the foil corrosion test, and thus caused the cleaning process to be ineffective. We developed a novel UCT with improved effectiveness by adjusting the design and adding a water circulation system. From the HRA, we were able to design the dimensions of the UTC and position of the transducer to be suitable to increase the acoustic pressure and cleaning area. CFD results enabled us to design proper inlet and outlet shapes, as well as simulate the water flow behavior to find the optimal cleaning condition so the novel UCT had a water circulation system that could eliminate the excess particles.

show abstract

Section: Cfd Settingmentioning

confidence: 99%

A Novel Ultrasonic Cleaning Tank Developed by Harmonic Response Analysis and Computational Fluid Dynamics

Tangsopa

Thongsri

2020

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

“…Convergent criterion was set as 10 -4 . The turbulence model was shear stress relevant to industrial and medical applications [10][11]. This turbulence model combined the advantages of both k − ω and k − ε turbulence models together, thus enabling us to simulate the fluid's flow behavior in the inner area of the boundary layer accurately, which is the k − ω's uniqueness.…”

Section: Boundary Conditionsmentioning

confidence: 99%

Numerical Investigation on the Performance of Suction Head in a Cleaning Process of Hard Disk Drive Factory

Khongsin

Thongsri

2020

ECTI-EEC

View full text Add to dashboard Cite

The suction head is a component positioned at the vacuum cleaner's tip and used to control airflow to eliminate small particles, thus preventing contamination from occurring during the cleaning process at a hard disk drive (HDD) manufacturing factory. At the factory, 2 suction head types (bowl and straight) were used in the cleaning process. From an actual usage, the operators questioned the operating condition's performance and suitability. In order to seek an answer to the questions, the researchers used computational fluid dynamics (CFD) to simulate airflow and particle trace using the ANSYS Fluent software, the factory's actual conditions, and a suction distance ranging between 2.5-15 mm. CFD simulation results showed that the bowl type suction head performed better compared to the straight type in every suction range under the exact same operating conditions. Both suction heads performed well at a 5 mm distance between the suction head and cleaning area. Suction performance decreased when the head was positioned closer or farther than the mentioned distance. Apart from applying all results from this research to increase cleaning efficiency in the actual factory, the findings could also be used as basic information for designing new suction head models with higher efficiency than the original model.

show abstract

“…The SST k − ω model was shown to have higher accuracy than a common k − ε model. An example of successful usage of the SST k − ω to simulate the airflow in a small volume jet nebulizer was reported in [12] and aerodynamics of trailing blade in a gas turbine was reported in [13]. The SST k −ω model consists of two equations as in Eqs.…”

Section: Governing Equationsmentioning

confidence: 99%

“…Full forms and descriptions of related parameters in Eqs. (1)-(5) can be found in [11,13]. The airflow behavior is derived from the Eqs.…”

Section: Governing Equationsmentioning

confidence: 99%

“…However, for further and precise results of simulation, particle traces calculation should be integrated with the airflow simulation by using Discrete Phase Model (DPM). The DPM will be utilized to predict traces of the particles and find a method to sustainably eliminate them as reported in [12][13][14]. Therefore, a combination technique of CFD and DPM for the LCA line modelling is promising work in the future.…”

Section: Evaluation and Improvementmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation and Improvement of Ventilation System Inside Low-Cost Automation Line to Reduce Particle Contamination

et al. 2020

View full text Add to dashboard Cite

A Low-Cost Automation (LCA) line, a group of machines to manufacture hard disk drive's components located inside a clean room of factory, faces the problem of particle contamination caused by an improper ventilation system. To solve this problem, Computational Fluid Dynamics (CFD) has been implemented to evaluate airflow and simulate solutions to improve the ventilation system of the LCA. By using actual operating conditions collected at the factory and Fluent CFD software, the simulation showed that airflow patterns in such areas were substandard. For example, the large areas of recirculation zone with air velocities lower than 0.2 m/s such as Fan Filter Units' conveyor and Work Area. The low velocity of the airflow can cause particle contamination and leads to low-quality production. To reduce the particle contamination, we suggested novel solutions based on the CFD results by increasing the momentum source (S m ) and/or redesigning the LCA's model especially extending its height of cover. The increasing of S m can be simply implemented by increasing the air-condition power to the optimal values according to the calculation leading to a reduction in recirculation areas. In addition, extending the height of the LCA's cover also improved the air velocities in the critical areas to meet the factory's standard.

show abstract

Investigation of the Trailing Edge Modification Effect on Compressor Blade Aerodynamics Using SST k-ω Turbulence Model

Cited by 17 publications

References 24 publications

A Novel Ultrasonic Cleaning Tank Developed by Harmonic Response Analysis and Computational Fluid Dynamics

A Novel Ultrasonic Cleaning Tank Developed by Harmonic Response Analysis and Computational Fluid Dynamics

Numerical Investigation on the Performance of Suction Head in a Cleaning Process of Hard Disk Drive Factory

Evaluation and Improvement of Ventilation System Inside Low-Cost Automation Line to Reduce Particle Contamination

Contact Info

Product

Resources

About