A review on convective heat transfer enhancement using ultrasound

Dehbani, Maryam; Rahimi, Masoud; Rahimi, Zohreh

doi:10.1016/j.applthermaleng.2022.118273

Cited by 45 publications

(9 citation statements)

References 118 publications

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“…There is intrinsic ambiguity involved in the creation of new knowledge. It expands our knowledge (Dehbani et al, 2022) According Okpara etal. ( 2016) believed in the open innovation concept, which is defined as using an invention to develop a commercial good or service.…”

Section: A: Collect Notes B-collecting and Process Data Linked To Mar...supporting

confidence: 68%

Investigation the Relationship Between Main Sources Knowledge Acquisition and Open Innovation at the Second Managerial Levels of the General Directorate of Traffic

Majeed¹,

Kadhum²

2023

J. Professional Business Review

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Purpose: This study aims to examine and investigate the main sources of knowledge acquisition for individuals at the middle management levels and determine the relationship (degree of correlation and influence) between the variables of the study Theoretical framework: Recent and future studies literature reported the need for, knowledge acquisition takes place, and the best methods are those that come from outside sources such as partners, competitors, suppliers, and customers, as best practices when compared to other institutions. Design/methodology/approach: this study used the scientific methodology based on knowledge analysis, it used a questionnaire that was created taking into account the scientific requirements, Two main hypotheses have been developed. And it consisted of a sample of individuals who depended on learning new things, most similar to knowledge processes. The second organizational level of the General Traffic Department and (63) other individuals were used to generate this sample and adopted computer statistics (SPSS. V. 24) to analyze and process data and information Findings: The results concluded and found that the variables of acquiring knowledge and open innovation had a positive correlation and impact, as the variable (partners) obtained the highest correlation value. Research, Practical & Social implications: Managers can find new visions and indicators for applying the knowledge acquisition system, and identifying their impact on achieving open innovation. Originality/value: The value of the study is to enhance the understanding of the literature related to The Relationship Between Main Sources of Knowledge Acquisition And Open Innovation by analysis, and provides an applied conception.

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Section: A: Collect Notes B-collecting and Process Data Linked To Mar...supporting

confidence: 68%

Investigation the Relationship Between Main Sources Knowledge Acquisition and Open Innovation at the Second Managerial Levels of the General Directorate of Traffic

Majeed¹,

Kadhum²

2023

J. Professional Business Review

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“…The experiments are carried out at room temperature (23.5 °C) under the following operational conditions: mass flux ( G ) 118.64–218.04 kg/(m 2 ∙s), heat flux ( q ) 10.23–56.51 kW/m 2 , inlet temperature 35.3–36.5 °C, absolute saturation pressure of minichannel section 152 ± 1 kPa, ultrasonic field frequency 23 kHz, 28 kHz, 32 kHz and 40 kHz, and sound intensity ( I ) 12.5 W/cm 2 , 25 W/cm 2 , 37.5 W/cm 2 and 50 W/cm 2 . The selection for the range of ultrasonic frequencies (between 23 and 40 kHz) is due to that the acoustic flow effect and cavitation effect with enhanced heat transfer effect can be generated in low-frequency ultrasound (20 ∼ 100 kHz) [6] , [34] . First, inert gas ( N 2 ) is injected into the experimental system to clean the pipeline and check for any leaks.…”

Section: Methodsmentioning

confidence: 99%

“…Since the 1960s, researchers have been increasingly interested in ultrasound as a new and effective method of enhancing heat transfer [5] , [6] . Wong and Chon [7] conducted experiments to investigate the effects of ultrasonic vibrations on heat transfer by natural convection and boiling.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on flow boiling bubble motion under ultrasonic field in vertical minichannel by using bubble tracking algorithm

Xiao

Zhang

2023

Ultrasonics Sonochemistry

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“…Common methods for cooling electronic devices include heat sinks, liquid cooling system, axial fans, and so on [ 1 , 2 , 3 , 4 ]. However, the high integration, miniaturization, and application situation diversity of electronic devices put forward higher requirements (such as small area heat dissipation, high penetrating capability, or low noise) for cooling system designs [ 5 , 6 , 7 ]. An effective cooling method for small heating elements can not only reduce the structural complexity of cooling systems, but also make cooling systems more energy-efficient.…”

Section: Introductionmentioning

confidence: 99%

Study on the Cooling Performance of a Focused Ultrasonic Radiator for Electrical Heating Elements

Su,

Wang,

Zheng

et al. 2024

Micromachines

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In this work, a focused ultrasonic radiator is proposed for cooling the electrical heating elements in the focal region, and its working characteristics are investigated. The analyses of the FEM computational and flow field visualization test results indicate that focused ultrasound can generate forced convective heat transfer by the acoustic streaming in the focal region, which can cool the heating elements effectively. Experiments show that when the input voltage is 30Vp-p and the ambient temperature is 25 °C, the focused ultrasonic radiator can cause the surface temperature of the heating element (high-temperature alumina ceramic heating plate with a diameter of 5 mm) in the focal region to drop from 100 °C to about 55 °C. When the diameter of the electrical heating element is changed from 5 mm to 30 mm, the cooling effect is similar in the focal region. Compared with a fan, the focused ultrasound radiator has a shorter cooling time and a more concentrated cooling area. The focused ultrasonic radiator proposed in this work is suitable for some special environments.

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A review on convective heat transfer enhancement using ultrasound

Cited by 45 publications

References 118 publications

Investigation the Relationship Between Main Sources Knowledge Acquisition and Open Innovation at the Second Managerial Levels of the General Directorate of Traffic

Investigation the Relationship Between Main Sources Knowledge Acquisition and Open Innovation at the Second Managerial Levels of the General Directorate of Traffic

Experimental investigation on flow boiling bubble motion under ultrasonic field in vertical minichannel by using bubble tracking algorithm

Study on the Cooling Performance of a Focused Ultrasonic Radiator for Electrical Heating Elements

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