PIV and LIF study of slot continuous jet at low Reynolds number

Broučková, Zuzana; Hsu, Shang Wei; Wang, Anbang; Trávníček, Z.

doi:10.1051/epjconf/201611402007

Cited by 2 publications

(3 citation statements)

References 15 publications

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“…The system is controlled by DynamicStudio v3.40 Software (Dantec Dynamics). More details were described previously by Brouþková et al [3].…”

Section: Experimental Setup and Methodsmentioning

confidence: 99%

“…The fluid entrainments are not confined at the plume ends, therefore the plume volume flux is enhanced at the ends. 201 It is worthy of notice here that this mechanism is well know from rectangular fluid jets, where this process basically changes a two-dimensional (plane) jet flow causing a three-dimensional flow character with a saddle-back velocity profile -see Vouros et al [6] and Brouþková et al [3].…”

Section: Velocity Flow Field: Piv Experimentsmentioning

confidence: 99%

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PIV and LIF study of flow and thermal fields of twine plumes in water

Broučková

Trávníček

2017

EPJ Web Conf.

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Abstract. Flow and thermal fields of a pair of plane plumes in water are investigated by means of PIV and LIF experiments. The plumes are generated from thermal line sources, which are made out of electrically heated cylinders with a diameter of D = 1.21 mm. A cylinder-to-cylinder distance was 17.9 D. Either continuous or pulsating heating were used with the same heating input power. Because the cylinder-tocylinder distance is moderately small, deflections of plumes from a vertical direction occur and the plumes are inclined together. This behavior is caused by a confined entrainment from a space between the both plumes. For a continuous heating, low frequency oscillations were identified and the natural frequency was evaluated as 0.5 Hz. Based on this finding, pulsating heating was used at the subharmonic frequency of 0.25 Hz. The maximum time-mean velocity magnitude at the continuous and pulsating heating were commensurable, approximately 0.007 m/s. On the other hand, pulsating heating achieves by 36 % higher velocity peaks. A very strong velocity oscillations were generated by pulsating heating at the distance approximately 8.3 D above the cylinders, where the velocity maxima oscillate along the time-mean value of 0.0057 m/s from -30% to +70 %. Temperature fields reasonably agree with this findings, despite a relatively fast equalization of the temperature field was concluded. The results demonstrate enhancement effects of pulsations in flow/thermal fields.

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“…The system is controlled by DynamicStudio v3.40 Software (Dantec Dynamics). More details were described previously by Brouþková et al [3].…”

Section: Experimental Setup and Methodsmentioning

confidence: 99%

Section: Velocity Flow Field: Piv Experimentsmentioning

confidence: 99%

PIV and LIF study of flow and thermal fields of twine plumes in water

Broučková

Trávníček

2017

EPJ Web Conf.

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“…The preliminary results were described and provided previously by Broučková et al [118,119] The experiments were performed in a cubic glass water tank setting with the side length of 390 mm. The PIV system (using Dantec Dynamics, FlowMap1500) was used with polyamide seeding particles (PSP-5, Dantec Dynamics, 5µm in diameter).…”

Section: Particle Image Velocimetry (Piv)mentioning

confidence: 99%

Synthetic and Continuous Jets Impinging on a Circular Cylinder

Broučková

Trávníček

Vít

2018

Heat Transfer Engineering

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Declaration of authorshipI hereby confirm that the submitted work is entirely my own and was written only with help of referenced literature. iv AbstractSynthetic and continuous jets impinging onto an heated circular cylinder were investigated.The study was performed experimentally. For this reason, a piezoelectrically driven actuator with water as the working fluid was designed. The basic parameters of the experiments were: the slot nozzle width was 0.36 mm, the aspect ratio of the slot was 111, the cylinder diameter was 1.2 mm, and the cylinder-to-nozzle spacing related to the slot width was 5-21.

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PIV and LIF study of slot continuous jet at low Reynolds number

Cited by 2 publications

References 15 publications

PIV and LIF study of flow and thermal fields of twine plumes in water

PIV and LIF study of flow and thermal fields of twine plumes in water

Synthetic and Continuous Jets Impinging on a Circular Cylinder

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