THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES

CETKİN, E.

THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES

E. CETKİN (İzmir Yüksek Teknoloji Enstitüsü, Makina Mühendisliği Bölümü, İzmir, Türkiye)

Journal of Thermal Engineering

4 1

Yıl: 2018 Cilt: 4 Sayı: 2 Sayfa Aralığı: 1855 - 1866 Metin Dili: İngilizce İndeks Tarihi: 09-08-2019

THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES

Öz:

Here, we show how the vascular channel configuration and its shape affect the mechanical strength which issimultaneously subjected to heating and mechanical load. The material properties were defined as functions oftemperature. The effect of channel cross-section on the coolant mass flow rate, peak temperature and peak stressesare documented. The results show that the resistances to flow of stresses and fluid is minimum with the circularchannels while the resistance to the heat flow is the smallest with semi-circular channels. In addition, morphingthe vascular design provides almost the smallest resistance to the heat flow with circular channels (0.3% differencein the peak temperature). This shows that even the convective resistances are the smallest with circular-crosssection, overall thermal resistance is smaller in semi-circular design for the fixed fluid volume. The peak stress issmaller with hybrid design than the parallel designs for the entire pressure drop range. In addition, the effects ofmechanical load, heating rate and reference temperature on the stress distribution are also documented.Furthermore, the thermal and mechanical stresses are also documented separately, and then compared with thecoupled solution cases. The chief result of this paper is that for a coupled system minimizing only one of theresistance terms is not sufficient, all the resistances considered simultaneously in order to uncover the bestperforming design. In coupled solutions, we documented the simulation results with temperature dependentmaterial properties and the resistances to the heat and fluid flow is affected by the mechanical deformations. Inaddition, the results show that the designs should be free to vary, the unexpected designs can be the best performingdesigns for the given parameters and constraints. Therefore, the design parameters based on the experience doesnot always yield the best performing designs as the objectives and constraints vary.

Anahtar Kelime:

Konular: Fizik, Uygulamalı

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	CETKİN E (2018). THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. , 1855 - 1866.
Chicago	CETKİN E. THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. (2018): 1855 - 1866.
MLA	CETKİN E. THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. , 2018, ss.1855 - 1866.
AMA	CETKİN E THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. . 2018; 1855 - 1866.
Vancouver	CETKİN E THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. . 2018; 1855 - 1866.
IEEE	CETKİN E "THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES." , ss.1855 - 1866, 2018.
ISNAD	CETKİN, E.. "THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES". (2018), 1855-1866.

APA	CETKİN E (2018). THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. Journal of Thermal Engineering, 4(2), 1855 - 1866.
Chicago	CETKİN E. THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. Journal of Thermal Engineering 4, no.2 (2018): 1855 - 1866.
MLA	CETKİN E. THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. Journal of Thermal Engineering, vol.4, no.2, 2018, ss.1855 - 1866.
AMA	CETKİN E THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. Journal of Thermal Engineering. 2018; 4(2): 1855 - 1866.
Vancouver	CETKİN E THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES. Journal of Thermal Engineering. 2018; 4(2): 1855 - 1866.
IEEE	CETKİN E "THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES." Journal of Thermal Engineering, 4, ss.1855 - 1866, 2018.
ISNAD	CETKİN, E.. "THE EFFECT OF COOLING ON MECHANICAL AND THERMAL STRESSES IN VASCULAR STRUCTURES". Journal of Thermal Engineering 4/2 (2018), 1855-1866.