Faculty of EngineeringMechanical Engineering

Mechanical Engineering

Thermo-Fluids Laboratory

Thermo-Fluid Laboratory

1.     Laboratory Staff and Contact information:

2.     Aim

3.     Ongoing Experiments/Tests

4.     List of Experimental Facilities Located in the Thermo-Fluid Laboratory

5.    Completed Studies in the Laboratory or Using Laboratory Equipments.

6.    Publications

7.    SPECIFICATIONS OF EXPERIMENTAL FACILITIES



1.     Laboratory Staff and Contact information:

Corresponding Person : Assist. Prof.Dr. Barış YILMAZ
Email                           :  byilmaz@marmara.edu.tr
Tel                              : 0216 348 02 92 (1554)

                                          : Assoc. Prof.Dr. Emre ALPMAN
Email                           :  emre.alpman@marmara.edu.tr
Tel                              : 0216 348 02 92 (1546)

Lab. Assistant                : Res. Assit. Hüseyin YALTIRIK
Email                           :  huseyin.yaltirik@marmara.edu.tr
Tel                              :  0216 348 02 92 (1560)

2.     Aim

2.1  The aim of the thermo-fluid laboratory is to conduct experimental studies about heat transfer and fluid mechanics fields both on undergraduate and graduate levels.

2.2  To conduct tests and measurements regarding to demands from industry about heat and fluid applications

3.     Ongoing Experiments/Tests

Several MSc and PhD thesis have been completed using laboratory facilities. Laboratory equipment are discussed to be used in both graduate and undergraduate courses.

 

4.     List of Experimental Facilities Located in the Thermo-Fluid Laboratory

 

Equipment Name

Brand

Quantity

1

Particle Image Velocimeter (PIV)

Dantec Dynamics

1

2

Wind Tunnel

 

1

3

Hotwire Anemometer (CTA)

Dantec Dynamics

1

4

H920 Free & Forced Convection Heat Transfer Unit

 

 

 

5.    Completed Studies in the Laboratory or Using Laboratory Equipments.

 

Title of the Study

Date

Type

Equipment

1

Design of a multi-functional low speed subsonic wind tunnel and turbulence measurements. Advisors: Prof. Dr. Osman ISIKAN / Prof. Dr. M. Zafer GÜL

2002

PhD Thesis

Hot-Wire Anemometer

2

Experimental and numerical investigation of hemodynamics in the artificial artey-aorta anastomosis and the inflow cannula in ventricular assist systems to prevent complications, 108M377

2008-2010

TÜBİTAK
Project

PIV

3

Experimental and numerical analysis of internally grooved circular jet flows; Tugay ŞİŞMAN; Advisors: Yrd. Doç. Dr. A. Talat İNAN / Prof. Dr. M. Zafer GÜL

2011-2013

MSc Thesis

Hot-Wire Anemometer

4

Experimental investigation of elliptical finned heat exchangers under free and forced convection; by Emine CERYAN; Advisor: Yrd. Doç. Dr. A. Talat İNAN

2014-?

MSc Thesis

Hot-Wire Anemometer

 

6.    Publications

6.1.                E. Sorgüven, L. Kavurmacıoğlu, G. İnci, H. Yaltırık, Z. Gül, N. Eğrican, Numerical and Experimental Investigation of the Flow through the LVAD outlet conduit-Aorta Anastomosis, ASAIO 56th Annual Conference, Baltimore, Maryland, May 27 - 29, 2010.

6.2.                E. Sorgüven, L. Kavurmacıoğlu, B. Turgut, G. İnci, H. Yaltırık, Z. Gül, N. Eğrican, Altered hemodynamics in the left ventricle due to the LVAD inlet cannula, Türk Kalp ve Damar Cerrahisi 11. Ulusal Kongresi, 27-31 Ekim 2010, Antalya, Türkiye.

6.3.                E. Sorgüven, L. Kavurmacıoğlu, G. İnci, H. Yaltırık, Z. Gül, N. Eğrican, Numerical and Experimental Investigation of the Flow through the LVAD Outlet Conduit-Aorta Anastomosis, Türk Kalp ve Damar Cerrahisi 11. Ulusal Kongresi, 27-31 Ekim 2010, Antalya, Türkiye.

 

7.    SPECIFICATIONS OF EXPERIMENTAL FACILITIES

 7.1.  TD1 Forced Convection Heat Transfer Experimental Setup

A compact free-standing laboratory apparatus allows students to investigate the theory of forced convection in pipes and associated heat transfer principles.

Specifications

  1. Constant speed fan with variable flow control valve – for better flow control
  2. Includes Pitot tube traverse for velocity profile measurements and traversing thermocouple to measure temperature distribution across the test pipe
  3. Includes thermocouples along the test pipe to measure heat transfer
  4. Accurate digital display of temperatures
  5. 5.    Includes manometers and an orifice to measure pressures and airflow rate

Experiments

  1. Derivation of the value of Nusselt number (Nu) and comparison with empirical formula
  2. Calculation of the local heat transfer coefficient (h)
  3. Determination of the Stanton number (St)
  4. Calculation of the friction factor (f) and comparison with experimental value
  5. Determination of the validity of the Reynolds Analogy for air

 

7.1.  Wind Tunnel

  • Test Section Input Size: 320 x 320 mm, Output Size: 336x336 mm.
  • Maximum Velocity in tunnel is 40 m/s.
  • Test Section standard length is 75 cm. It can be increased to 1.5m.

7.1. Hot-Wire Anemometry (CTA)

 1.  The main unit of Hot wire Anemometry device has following features,

  • 3D measurements up to 3 channels.
  • Serial Control Unit
  • Temperature sensor response time depending on thermistor type is approximately 1 second.
  • Square wave between 150 Hz and 50 Hz depending on step response of test setup.
  • Voltmeter accuracy 80 mV
    • Streamware software

 

 2.   Specifications of Single-Channel Hot-Wire Anemometry Module

  • Voltage output: 0 to 10 V,
  • Input Noise level 1.8 mV/Hz
  • Probe resistance measurement accuracy 0.1% ± 0.01 ohm.
  • In 1:20 bridge; maximum probe current is 830 mA, max band width 250 kHz, applicable resistance between 2 and 64 ohms, bridge upper resistance 10 or 20 ohms.
  • High temperature resistance accuracy 0.1%
  • Signal Generator Unit has following specifications;

−        Gain 1 to 1024, 0.15% accuracy

−        Input offset can be varied between 0 and 10 V, ± 0.15% accuracy, < 1 mV resolution, -10 V to +10 V output voltage,

−        Output offset can be varied 0 to 5 V, accuracy ±0.1%, < 0.5 mV resolution

−        Low-pass filter; 0.3, 1, 3, 10, 30, 100, 300, kHz ±5%

−        High-pass Filter; 10, 100 Hz ±10%

 

 3.  Specifications of Data Acquisition System

  • Digital ratio 20 M samples/s
  • Response to small changes in velocity resolutions
  • 12 bits to obtain line and in case of zero analogue
  • 3 Evaluation of the three channels at the same time.

 

 4.  Specifications of miniature hot-wire anemometry probes are as follows,

  • Platinum surface, 5 mm in diameter and length of 1.25 mm
  • Censor resistance 3.5 W
  • Maximum censor temperature 300°C
  • Minimum velocity of 0.02 m/s, Maximum velocity of 500 m/s

7.1.  Particle Imaging Velocimeter (PIV)

The system is used to image velocity fields for liquid and air flows. It is composed of laser for imaging and high speed camera for recording.

 

Specifications of Laser

NewWave Solo 120XT Laser

Repetition Rate (Hz)

 

15

Energy1,2 (mJ)

532 nm

120

266 nm

20

Energy Stability2 (±%)

532 nm

4

266 nm

9

Beam Diameter (mm)

5

Pulse Width3 (ns)

3-5

Beam Divergence4 (mrad)

<3

Beam Pointing4 (µrad)

<100

Jitter5 (±ns)

1

Power (watts)

1000

 

High Speed Camera: Dantec FlowSense M2:

  • 2 mega pixel, double-shutter, single frame CCD
  • Frame format: 1600x1200
  • Frame Rate:30 fps
  • Resolution: 10 bit
  • Lens: Nikon AF Micro-Nikkor 60 mm f2.8 D

 

This page updated by Mechanical Engineering on 20.11.2015 11:55:43

Mechanical Engineering