a schematic design and an ndt approach for a radiator ... · the utilization of cuo - water nano...
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International Journal of Engineering and Techniques - Volume 4 Issue 2, Mar – Apr 2018
ISSN: 2395-1303 http://www.ijetjournal.org Page 486
A Schematic Design and an NDT Approach for a
Radiator Tubes Using Nano fluids Vodnala Veda Prakash
1, S. Chakradhara Goud
2
1(Department of Mechanical, Research Scholar ,Shri JJT University, Rajasthan)
2 (Prof. & Principal, Moghal College of Engineering & Technology,Hyderabad)
I. INTRODUCTION
CFD is a science that can be useful for
concentrate liquid stream, warm exchange,
substance responses and so forth by comprehending
scientific conditions with the assistance of
numerical investigation. CFD (Computational
liquid flow) utilizes an extremely basic rule of
settling the whole framework in little cells or
lattices and applying overseeing conditions on these
discrete components to discover numerical
arrangements with respect to weight conveyance
temperature inclinations, stream parameters and so
forth in a shorter time at a lower cost as a result of
decreased required test work. Car Radiator are
ending up profoundly control stuffed with
expanding energy to weight or volume proportion.
Expanded request on control pressed radiators,
which can disperse most extreme measure of
warmth for any given space. Nano liquids give
higher warmth exchange rate than base liquids. This
examination includes CFD reenactment of the mass
stream rate of Nano liquid and warmth exchanger
(radiator) at different coolants (Nano liquids). In
this paper, CFD used to reenact stream and warmth
exchange radiator (warm exchanger). Coolants
course through the containers of the radiator, warm
is exchanged through tube viders to the air by
conduction and convection. The radiator of auto is
examined to get warm exchange rate at various
volume parts and coolants in this examination. CFD
investigation gives precise and correct outcome.
Warmth is made when the gas and air blend is
touched off in the ignition chamber. This blast
makes the cylinder be constrained down inside the
motor, levering the associating bars, and turning the
crankshaft, making power. Metal temperatures
around the burning load can surpass 538°C. With a
specific end goal to keep the overheating of the
motor oil, chamber dividers, cylinders, valves, and
different parts by these outrageous temperatures, it
is important to successfully discard the warmth.
Roughly 1/3 of the warmth in ignition is changed
over into energy to drive the vehicle and its extras.
Another 1/3 of the warmth is taken away into the
environment through the fumes framework. The
rest of the 1/3 must be expelled from the motor by
the cooling framework The utilization of nano
fluids can possibly enhance the motor cooling rates.
RESEARCH ARTICLE OPEN ACCESS
Abstract: The headway in vehicle innovation is expanding every day. The proficiency of the motor relies upon
warm exchange rate of radiator in vehicle and further it transfers on stream limit of liquids and material utilized as
a part of assembling of radiator. For the most part water is utilized as cooling liquid in car. The scientists were
focused on various materials and found that copper and aluminum materials demonstrate a higher warmth
exchange rate contrast with different materials. The stream limit and warmth retention of the liquid can be
enhanced with the expansion of Nano added substances in radiator. In the present work the execution of the
radiator is broke down with various Nano liquids utilizing CATIA and ANSYS. Thus the present work is arranged
in like manner. Diverse Nano liquids Cu, Fe, Au, Ag for volume division 0.3, are blended with base liquid water
are broke down for their execution in the radiator. Displaying of the radiator is done in CATIA. The liquid stream
qualities are discovered utilizing CFD examination and with a similar warm investigation are done in ANSYS.
Keywords — Heat Transfer co efficient, Heat Transfer Rate, Nano fluid and Radiator Tubes.
International Journal of Engineering and Techniques - Volume 4 Issue 2, Mar – Apr 2018
ISSN: 2395-1303 http://www.ijetjournal.org Page 487
These upgrades can be utilized to evacuate motor
warmth with a diminished size cooling framework.
Littler cooling framework prompts utilization of
littler and lighter radiators which thusly will prompt
better execution and expanded productivity.
2.0 OBJECTIVES:
1. To know the preparation of NDT
APPORACH FOR A RADIATOR TUBES USING
NANO FLUIDS
2. To study the applications of NDT
APPORACH FOR A RADIATOR TUBES USING
NANO FLUIDS
3. To understand the properties such as
mechanical, electrical and thermal properties of
NDT APPORACH FOR A RADIATOR TUBES
USING NANO FLUIDS
4. To study the usage of NDT APPORACH
FOR A RADIATOR TUBES USING NANO
FLUIDS
3.0 LITERATURE REVIEW:
V. L. Bhimani et.al, [1] tentatively explored
constrained convective warmth move in a water
based nano fluid. Five unique groupings of nano
fluids in the scope of 0.1-1 vol. % have been
utilized with stream rate in the scope of 90-120
lit./min. The outcome demonstrates that warmth
exchange upgrade of 40-45% contrasted with
unadulterated water at the centralization of 1% vol.
Gaurav Sharma et al. [2] tentatively researched
the warm conductivity and thickness of Al2O3-
motor Nano-coolant. For 0.5% vol. convergence of
Al2O3 nano fluid at 40ºC The most extreme
enhanced warm conductivity is 5.7% and the
improvement in consistency is 124%.
Adnan M. Hussein et al. [3] tentatively explored
the grinding factor and constrained convection
warm exchange improvement utilizing SiO2 nano
particles suspended into water. Four distinct
centralizations of nano fluids in the scope of 1 to 4 %
(Vol.) with changed stream rate from 1 to 5 lpm
have been utilized. The most extreme estimation of
rubbing factor was expanded to 22% and a most
astounding estimation of the warmth exchange
coefficient improves upto 40% for SiO2 nano
particles with 4% volume fixation.
Rahul A.Bhogare et.al. [4] outlined a survey on
application and difficulties of nano-liquids as
coolant in car radiator. Nano fluids can possibly
enhance car and substantial – obligation motor
cooling rates by expanding the productivity,
bringing down the weight and decreasing the
intricacy of warm administration
Chavan D.K. et.al, [5] Outlined the investigation,
examination and plan of vehicle radiator proposed
withdrawing and geometrical model of the fan. He
explored that speed increments with the expansion
in rpm of radiator fan. So he inferred that for ideal
proficiency disposes of corners and create radiator
of roundabout shape.
Deepak Chintakayala et.al, [6] considered the
cooling impact by utilizing a nano fluid as a coolant
in a radiator and is examined for assessing the
liquid stream and warmth exchange qualities. This
examination is broke down by utilizing a CFD
programming FLUENT. It is obviously watched
that misfortune in temperature for traditional
coolant is 17°C and for nano fluid as coolant it is
20ºC. From his investigation he presumed that the
rate of warmth exchange is better when nanofluid
(Al2O3 + water ) is utilized as coolant than
ordinary coolant.
Navid Bozorgan et.al, [7] numerically explored
the utilization of CuO - water nano fluid as a
coolant in a radiator at Chevrolet rural diesel motor
with a given warmth exchanger limit. The outcomes
demonstrated that for CuO-water nano fluid at 2 %
volume fixation coursing through the level tubes
with Re - 6000 while the car speed is 70 km/hr , the
general warmth exchange coefficient and pumping
power are around 10 % and 23.8 % more than that
of base liquid for given conditions.
Paresh Machhar et.al, [8] tentatively examined
the warmth exchange upgrade of vehicle radiator
with TiO2/water nano fluid. Five unique
centralizations of nano fluids in the scope of 0.1-1
volume % will be set up by the expansion of TiO2
nano particles into the water. He saw from
examination that the utilization of nano fluid with
low focus can improve warm exchange proficiency
up to 45 % in correlation with unadulterated water.
Ravikanth S.Vajjha et.al, [9] examined a three
dimensional laminar stream and warmth exchange
with two diverse nano fluids Al2O3 and CuO nano
particle in an ethylene glycol and water blend
circling through the level containers of a vehicle
International Journal of Engineering and Techniques - Volume 4 Issue 2, Mar – Apr 2018
ISSN: 2395-1303 http://www.ijetjournal.org Page 488
radiator. The numerical outcomes appeared at a
Reynolds number of 2000, the rate increment in the
normal warmth exchange coefficient over the base
liquid for a 10% Al2O3 nano fluid was 94 % and
that for a 6 % CuO nano fluid was 89 %.The
normal skin grating coefficient for a 6% CuO nano
fluid in the completely created locale is around 2.75
times in contrast with that of the base liquid at a
steady channel speed of 0.3952 m/s.
Shen et.al, [10] with the headway of
nanotechnology, a coolant are designed which is
known as "nano fluids". The Researchers found that
these liquids offer higher warm conductivity
contrasted with that of ordinary coolants. The
investigation is centered on the execution
assessment of the louvered balance based tube car
radiator utilizing nano fluids as coolant. The
minimized radiator is fundamentally utilized as a
part of car vehicles. In the present work, important
info information, nano fluid properties and
experimental connections is taken from past
writings and is examined the liquid stream and
cooling limit attributes of a smaller car radiator
worked with the utilization of nano liquid like Si C
based liquid.
4.0 MATERIALS AND METHODS:
Design specifications
Size of the radiator =500mmx100mm
Diameter of the tube (o.d)=12.5mm
Diameter of the tube (i.d)=10mm
No. of tubes=20
Height of the radiator=460mm
Material used for tubes= Aluminum
Fluid=water
Physical Properties
Density: 2.7 g/cm3
Melting Point: Approx 580°C
Modulus of Elasticity: 70-80 GPa
Poissons Ratio: 0.33
Modeling:
Modeling:
Figure 1 : Modification of tube design with
single stress node
Assumptions in CFD:
The physics of conjugate heat transfer in radiator is
simplified with the following technically valid
assumptions.
• Velocity and temperature at the entrance of the
radiator core for air and coolant is uniform.
• No phase change occurs in fluid streams.
• Fluid flow rate is uniformly distributed through
the core in each pass on each fluid side. No flow
leakages occur in any stream. The flow condition is
characterized by the bulk speed at any cross section.
• The thermal conductivity of the solid material is
constant.
• No internal source exists for thermal-energy
generation
• Properties of the fluids and the wall, such as
specific heat, thermal conductivity, and density
International Journal of Engineering and Techniques - Volume 4 Issue 2, Mar – Apr 2018
ISSN: 2395-1303 http://www.ijetjournal.org Page 489
are only dependent on temperature. 5.0
RESULTS
Figure 2 shows meshing of tube elements
Figure 3 shows the thermal flow of hot fluids
and inlet temperature contours
Figure 4 shows the transient flow of liquid in
the radiator
Figure 5 shows the cooling ability with
temperature contours in tubes
Figure 6 shows the outlet flow heat flux
generation in tubes
International Journal of Engineering and Techniques - Volume 4 Issue 2, Mar – Apr 2018
ISSN: 2395-1303 http://www.ijetjournal.org Page 490
Figure 7 shows internal flaws of radiator tubes
Figure 7 shows transient thermal analysis and
temperature regions
Figure 8 shows heat transfer analysis
6.0 CONCLUSIONS AND DISCUSSIONS: From the above analysis the findings of tangential
flow in radiator tubes by taking water as porus
medium the maximum and minimum values
obtained are 0.7605e0 and0.1277e
01respectctively.
The heat and cooling losses obtained in the case 1
taken into consideration and the practical outputs
are verified in the next case with NDT application
to get optimum result.
REFERENCES
1) V. L. Bhimani et.al, {2007} „Heat transfer and
pressure drop correlations for the multi-louvered fin
compact heat exchangers, Energy Conversion and
Management, Vol. 48, pp.1506-1515.
2) Gaurav Sharma et al. {2012} „Numerical Study of
Fluid Dynamic and Heat Transfer in a Compact Heat
Exchanger Using Nanofluids‟, ISRN Mechanical
Engineering , Vol.2012, Article ID 585496.
3) Adnan M. Hussein et al. {2004} „A new thermal
conductivity model for nanofluids‟, Journal Nano
particle Research, Vol. 6, pp. 577-588.
4) Rahul A.Bhogare et.al. {2010} „Performance
investigation of an automotive car radiator operated with
nanofluid – based coolants (nanofluid as a coolant in a
radiator)‟, Applied Thermal Engineering, Vol. 30, pp.
2685-2692.
5) Chavan D.K. et.al, [5] {2011} „Improving the
cooling performance of automobile radiator with
Al2O3/water nanofluid‟, Applied Thermal Engineering,
Vol. 31, pp. 1833-1838.
International Journal of Engineering and Techniques - Volume 4 Issue 2, Mar – Apr 2018
ISSN: 2395-1303 http://www.ijetjournal.org Page 491
6) Deepak Chintakayala et.al, {2012} „Preformance
of flat fin tube automotive radiator using nanofluids as
coolants, Emerging trends in mechanical engineering
ETME 422-429.
7) Navid Bozorgan et.al,[{2010} „Finned tube
performance evaluation with nanofluids and
conventional heat transfer fluids‟, International Journal
Thermal Sciences, Vol. 49, pp. 580-588.
8) Paresh Machhar et.al, {2010} „Numerical Study of
fluid dynamic and heat transfer performance of Al2O3
and Cu O nanofluids in the flat tubes of a radiator‟,
International Journal Heat fluid Flow, Vol. 31, pp. 613-
621.
9) Ravikanth S.Vajjha et.al,{2013} „CFD analysis of
fluid flow and heat transfer of an automotive radiator
with nanofluid‟, Auto Vertical, L& T IES.
10) Shen et.al,{2014} „Heat transfer enhancement
using nanofluids in an automotive cooling system‟,
International communications in heat and mass transfer
Vol. 53, pp. 195-202.