Experimental study for plasma actuator performance enhancement through various electrode geometric shapes

2013 ◽  
Author(s):  
Jae-San Yoon ◽  
Jae-Hung Han
Keyword(s):  
Experimental Study ◽  
Performance Enhancement ◽  
Plasma Actuator ◽  
Geometric Shapes ◽  
Actuator Performance

Combined Numerical and Experimental Study on the Use of Gurney Flaps for the Performance Enhancement of NACA0021 Airfoil in Static and Dynamic Conditions

2021 ◽  
Author(s):  
Francesco Balduzzi ◽  
David Holst ◽  
Pier Francesco Melani ◽  
Felix Wegner ◽  
Christian Navid Nayeri ◽  
...  
Keyword(s):  
Experimental Study ◽  
Performance Enhancement ◽  
Dynamic Conditions ◽  
Gurney Flaps

Performance Enhancement of Recycled Aggregate Concrete – An Experimental Study

2021 ◽  
Author(s):  
Sivamani Jagan ◽  
Thurvas Renganathan Neelakantan ◽  
Palaniraj Saravanakumar
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Elastic Modulus ◽  
Performance Enhancement ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Aggregate Concrete ◽  
Coarse Aggregates ◽  
Durability Properties ◽  
Concrete Mixtures

Extensive studies have been performed on the mechanical and durability properties of the concrete prepared with recycled coarse aggregates (RCA), however, only modest consideration has been given to the studies on the behaviour of RAC prepared by alternative mixing approach techniques. This study presents the mechanical properties of the recycled aggregate concrete (RAC) with different percentages of RCA prepared by normal mixing approach (NMA), two-stage mixing approach (TSMA) and sand enveloped mixing approach (SEMA) techniques. The manufactured concrete mixtures were tested for compression, tension, flexure and elastic modulus at 7, 28 and 90 days. The results indicate that the mechanical properties of the RAC (with 100% of RCA) prepared through TSMA and SEMA were improved by 9.36 and 12.14% at 28 days. Perhaps, prolonged curing to TSMA and SEMA mixtures improved the mechanical properties of the RAC that is nearly equal to normal aggregate concrete (NAC) prepared by NMA.

scholarly journals Experimental study on noise reduction and performance enhancement for internal combustion engines

2020 ◽  
Vol 318 ◽  
pp. 01014
Author(s):  
Ioan Radu Şugar ◽  
Mihai Banica
Keyword(s):  
Experimental Study ◽  
Combustion Chamber ◽  
Noise Reduction ◽  
Fuel Consumption ◽  
Internal Combustion Engines ◽  
Performance Enhancement ◽  
Ceramic Materials ◽  
Combustion Engines ◽  
Large Cities ◽  
And Performance

As the number of cars increases and large cities become more and more crowded, noise reduction becomes more and more important. The decrease of the fuel consumption and the increase of power to the same cylindrical capacity are always current topics. This paper’s aim is to bring a contribution to solving these problems. The proposed solution consists in the use of ceramic materials in the design of the combustion chamber.

scholarly journals Experimental Study on Anti-Icing Performance of NS-DBD Plasma Actuator

2018 ◽  
Vol 8 (10) ◽  
pp. 1889 ◽  
Author(s):  
Jie Chen ◽  
Hua Liang ◽  
Yun Wu ◽  
Biao Wei ◽  
Guangyin Zhao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Heat Dissipation ◽  
Ccd Camera ◽  
Liquid Water Content ◽  
Pulse Frequency ◽  
Plasma Actuator ◽  
Voltage Amplitude ◽  
Dbd Plasma ◽  
Naca0012 Airfoil ◽  
Actuation Signal

An experimental study was conducted to evaluate the anti-icing performance of NS-DBD plasma actuator under the conditions of airflow speed U = 65 m/s, ambient temperature T = −10 °C, liquid water content LWC = 0.5 g/m3, mean-volume diameter MVD = 25 μm, mainly to clarify the effect of pulse frequency and voltage amplitude of actuation on anti-icing performance. A NACA0012 airfoil model with a chord length of c = 280 mm was used in the tests. The NS-DBD plasma actuator was mounted at the front part of the airfoil. A FLIR infrared (IR) imager and CCD camera were used to record the anti-icing process of the NS-DBD plasma actuator. Two typical discharge conditions were selected for the anti-icing experiments. The first was HV-LF discharge, corresponding to discharge under higher voltage amplitude with lower pulse frequency; the second was LV-HF discharge, corresponding to discharge under lower voltage amplitude with higher pulse frequency. Results reveal that NS-DBD is a very promising method for anti-icing. With the same power consumption, the LV-HF discharge shows a better anti-icing performance compared to HV-LF discharge under the same icing conditions. In view of pulse duration and duty circle, combined with heat dissipation, it is suggested that there is a threshold frequency, corresponding to the voltage amplitude of electric actuation signal and the incoming flow condition, to achieve effective anti-icing performance.

scholarly journals Experimental Study on Characteristics of Backward Jet Induced by Plasma Actuator

2013 ◽  
Vol 79 (807) ◽  
pp. 2375-2383 ◽  
Author(s):  
Yu IKOSHI ◽  
Satohi OGATA ◽  
Ryota YAMATANI ◽  
Takehiko SEGAWA
Keyword(s):  
Experimental Study ◽  
Plasma Actuator
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