Yazar "Çalışkan, Sinan" için Makale Koleksiyonu listeleme
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Çarpan akışkan jetleri kullanarak kanatçıklı yüzeyler üzerindeki akış alanının sayısal olarak incelenmesi
Çalışır, Tamer; Çalışkan, Sinan; Kılıç, Mustafa; Başkaya, Şenol (Ahmet Yesevi Üniversitesi, 2017)Bu çalışmada, 7x3 olarak dikdörtgen dizilime sahip dairesel jetler kullanılarak üçgen ve kare kanatçık bulunan yüzeyler üzerine çarptırılması sonucu oluşan akış yapısı sayısal olarak incelenmiştir. Re sayısının, jet-plaka ... -
Design analysis of impinging jet array heat transfer from a surface with V-shaped and convergent-divergent ribs by the taguchi method
Çalışkan, Sinan; Nasiri Khalaji, Mansour; Başkaya, Şenol; Kotcioğlu, İsak (Taylor and Francis Ltd., 2016)In this work, the effects of the impingement plate geometry, Reynolds number, jet-plate distance-to-jet diameter ratio, and the jet diameter-to-rib height ratio on the impingement jets were investigated using the Taguchi ... -
Effect of grooved pin-fins in a rectangular channel on heat transfer augmentation and friction factor using Taguchi method
Eren, M.; Çalışkan, Sinan (Elsevier Ltd, 2016)In this study, the effect of both cylindrical grooved pin-fins (C-GPFs) and triangular grooved pin-fins (T-GPFs) into the rectangular channel on heat transfer augmentation, Nusselt number and friction factor were experimentally ... -
Experimental and numerical investigation of geometry effects on multiple impinging air jets
Çalışkan, Sinan; Başkaya, Şenol; Çalışır, Temel (Elsevier Ltd, 2014)The effect of jet geometry on the flow and the heat transfer characteristics was investigated experimentally and numerically for elliptic and rectangular impinging jet arrays. Detailed heat transfer measurements over a ... -
Experimental investigation of a cross-flow heat exchanger with wing-type vortex generators
Kotcioğlu, İsak; Çalışkan, Sinan (2008)In this study, heat and fluid flow in a plate-fin heat exchanger with wing-type convergent-divergent longitudinal vortex generators (CDLVGs) were studied experimentally. A cross-flow plate-type heat exchanger was designed ... -
An experimental investigation of heat transfer enhancement in a rectangular duct with plate fins
In this study, using an ideal heat exchanger model, a detailed evaluation of performance parameters in the turbulent regime for the enhancement of heat transfer by using winglet-type vortex generators is carried out. The ... -
Experimental investigation of heat transfer from different pin fin in a rectangular channel
Çalışkan, Sinan; Doğan, Ayla; Kotcioğlu, İsak (Taylor and Francis Ltd., 2018)In this study, the effect of both hexagonal pin fins (HPFs) and cylindrical pin fins (CPFs) into the rectangular channel on heat transfer augmentation, Nusselt number and friction factor were experimentally investigated. ... -
Experimental investigation of heat transfer in a channel with new winglet-type vortex generators
Çalışkan, Sinan (Elsevier Ltd, 2014)Both new punched triangular vortex generators (PTVGs) and punched rectangular vortex generators (PRVGs) have been developed. Both the triangular and rectangular vortex generators were directly punched from the longitudinal ... -
Experimental investigation of impinging jet array heat transfer from a surface with V-shaped and convergent-divergent ribs
Çalışkan, Sinan; Başkaya, Şenol (2012)Detailed heat transfer measurements over a surface with V-shaped ribs (V-SR) and convergent-divergent shaped ribs (CD-SR) by a circular impinging jet array was investigated using thermal infrared camera. Both V-SR and CD-SR ... -
Experimental study on the heat transfer and pressure drop of a cross-flow heat exchanger with different pin-fin arrays
Kotcioğlu, İsak; Çalışkan, Sinan; Başkaya, Şenol (2011)In this study, convective heat transfer and pressure drop in a cross-flow heat exchanger with hexagonal, square and circular (HSC) pin-fin arrays were studied experimentally. The pin-fins were arranged in an in-line manner. ... -
Farklı soğutucular kullanarak CPU'nun ısı boruları ile soğutulması
Kotcioğlu, İsak; Çalışkan, Sinan; Manay, Eyüphan (Türk Isı Bilimi Ve Tekniği Derneği, 2009)Bu çalışma, bilgisayarların soğutulmasında ısı borularının etkin kullanılması ile ilgili yapılan teorik bir çalışmadır. Soğutucu akışkan ısı kaynağından (Central Processing Unit – CPU’dan) ısıyı absorbe eder. Evaporatörde ... -
Flow and heat transfer characteristics of transverse perforated ribs under impingement jets
Çalışkan, Sinan (2013)An experimental study was conducted to investigate heat transfer and flow characteristics under impingement of a multiple circular jet array with perforated rib surfaces (PRS) and solid rib surfaces (SRS). Heat transfer ... -
Heat transfer characteristics of longitudinal perforated and unperforated ribs under impingement jets
Çalışkan, Sinan (American Society of Mechanical Engineers (ASME), 2014)Impingement heat transfer is considered as heat transfer enhancement technique. Impinging jets are used in many applications where high heat transfer rates are required. An experimental study was conducted to investigate ... -
Numerical analysis of a commercial display cabinet with air curtain
Maintaining food temperatures below critical values is the important maximising the high quality display life of chilled foods. Air curtains are especially used in stores and retailer supermarkets as barrier systems to ... -
Numerical investigation of heat transfer using impinging jets on triangular and square ribbed roughened walls
Çalışır, Tamer; Çalışkan, Sinan; Kılıç, Mustafa; Başkaya, Şenol (Turkish Society for Thermal Science and Technology, 2017)This paper presents a heat removal study on triangular and square ribbed surfaces under an array of impinging air jets. The investigation was carried out using nozzles with a 7x3 rectangular array of circular jets. The ... -
Second law analysis and heat transfer in a cross-flow heat exchanger with a new winglet-type vortex generator
Kotcioğlu, İsak; Çalışkan, Sinan; Cansız, Ahmet; Başkaya, Şenol (Elsevier Ltd, 2010)In this paper a second law analysis of a cross-flow heat exchanger (HX) is studied in the presence of a balance between the entropy generation due to heat transfer and fluid friction. The entropy generation in a cross-flow ... -
Sizing problem for a cross flow heat exchanger with wing-type vortex generator
In the present study, sizing of a single pass cross flow heat exchanger with unmixed fluid streams has been investigated. The heat exchanger is a cross flow heat exchanger. It has overall dimensions of 20 × 20 × 20 cm. Two ... -
Transient turbulent flow and heat transfer phenomena in plate-fin type cross-flow heat exchanger
In this article, a transient performance of a plate-fin cross-flow heat exchanger with convergent-divergent longitudinal vortex generators is investigated. The effect of flow geometry is taken into account to analyze the ... -
Velocity field and turbulence effects on heat transfer characteristics from surfaces with V-shaped ribs
Çalışkan, Sinan; Başkaya, Sinan (2012)The flow field of smooth surfaces and surfaces with V-shaped ribs (V-SR) was studied experimentally with a Laser-Doppler Anemometry (LDA) system. In addition, heat transfer characteristics were experimentally investigated. ...