This article deals with the numerical modeling of the pulsating heat pipe (PHP) and is based on the film evaporation/condensation model recently applied to the single-bubble PHP (Das et al., 2010, “Thermally Induced Two-Phase Oscillating Flow Inside a Capillary Tube,” Int. J. Heat Mass Transfer, 53(19–20), pp. 3905–3913). The described numerical code can treat the PHP of an arbitrary number of bubbles and branches. Several phenomena that occur inside the PHP are taken into account: coalescence of liquid plugs, film junction or rupture, etc. The model reproduces some of the experimentally observed regimes of functioning of the PHP such as chaotic or intermittent oscillations of large amplitudes. Some results on the PHP heat transfer are discussed.

1.
Akachi
,
H.
, 1993, “
Structure of Micro-Heat Pipe
,” U.S. Patent No. 5,219,020.
2.
Vasiliev
,
L. L.
, 2005, “
Heat Pipes in Modern Heat Exchangers
,”
Appl. Therm. Eng.
1359-4311,
25
(
1
), pp.
1
19
.
3.
Zhang
,
Y.
, and
Faghri
,
A.
, 2008, “
Advances and Unsolved Issues in Pulsating Heat Pipes
,”
Heat Transfer Eng.
0145-7632,
29
(
1
), pp.
20
44
.
4.
Tong
,
B. Y.
,
Wong
,
T. N.
, and
Ooi
,
K. T.
, 2001, “
Closed-Loop Pulsating Heat Pipe
,”
Appl. Therm. Eng.
1359-4311,
21
(
18
), pp.
1845
1862
.
5.
Miyazaki
,
Y.
, and
Arikawa
,
M.
, 1999, “
Oscillatory Flow in the Oscillating Heat Pipe
,”
Proceedings of the 11th International Heat Pipe Conference
, pp.
143
148
.
6.
Khandekar
,
S.
,
Charoensawan
,
P.
,
Groll
,
M.
, and
Terdtoon
,
P.
, 2003, “
Closed Loop Pulsating Heat Pipes Part B: Visualization and Semi-Empirical Modeling
,”
Appl. Therm. Eng.
1359-4311,
23
(
16
), pp.
2021
2033
.
7.
Xu
,
J.
,
Li
,
Y.
, and
Wong
,
T.
, 2005, “
High Speed Flow Visualization of a Closed Loop Pulsating Heat Pipe
,”
Int. J. Heat Mass Transfer
0017-9310,
48
(
16
), pp.
3338
3351
.
8.
Gi
,
K.
,
Sato
,
F.
, and
Maezawa
,
S.
, 1999, “
High Speed Flow Visualization of a Closed Loop Pulsating Heat Pipe
,”
Proceedings of the 11th International Heat Pipe Conference
, pp.
149
153
.
9.
Inoue
,
T.
,
Kouduma
,
T.
,
Senjaya
,
R.
, and
Suzuki
,
Y.
, 2010, “
Bubble Generation in Oscillating Heat Pipe
,”
Proceedings of the 15th International Heat Pipe Conference
, Clemson University.
10.
Charoensawan
,
P.
,
Khandekar
,
S.
,
Groll
,
M.
, and
Terdtoon
,
P.
, 2003, “
Closed Loop Pulsating Heat Pipes: Part A: Parametric Experimental Investigations
,”
Appl. Therm. Eng.
1359-4311,
23
(
16
), pp.
2009
2020
.
11.
Li
,
J.
, and
Yan
,
L.
, 2008, “
Experimental Research on Heat Transfer of Pulsating Heat Pipe
,”
J. Therm. Sci.
1003-2169,
17
(
2
), pp.
181
185
.
12.
Ma
,
H. B.
,
Borgmeyer
,
B.
,
Cheng
,
P.
, and
Zhang
,
Y.
, 2008, “
Heat Transport Capability in an Oscillating Heat Pipe
,”
ASME J. Heat Transfer
0022-1481,
130
(
8
), p.
081501
.
13.
Maydanik
,
Y. F.
,
Dmitrin
,
V. I.
, and
Pastukhov
,
V. G.
, 2009, “
Compact Cooler for Electronics on the Basis of a Pulsating Heat Pipe
,”
Appl. Therm. Eng.
1359-4311,
29
(
17–18
), pp.
3511
3517
.
14.
Lips
,
S.
,
Bensalem
,
A.
,
Bertin
,
Y.
,
Ayel
,
V.
,
Romestant
,
C.
, and
Bonjour
,
J.
, 2010, “
Experimental Evidences of Distinct Heat Transfer Regimes in Pulsating Heat Pipes (PHP)
,”
Appl. Therm. Eng.
1359-4311,
30
(
8–9
), pp.
900
907
.
15.
Das
,
S.
,
Nikolayev
,
V.
,
Lefevre
,
F.
,
Pottier
,
B.
,
Khandekar
,
S.
, and
Bonjour
,
J.
, 2010, “
Thermally Induced Two-Phase Oscillating Flow Inside a Capillary Tube
,”
Int. J. Heat Mass Transfer
0017-9310,
53
(
19–20
), pp.
3905
3913
.
16.
Shafii
,
M. B.
,
Faghri
,
A.
, and
Zhang
,
Y.
, 2001, “
Thermal Modeling of Unlooped and Looped Pulsating Heat Pipes
,”
ASME J. Heat Transfer
0022-1481,
123
(
6
), pp.
1159
1172
.
17.
Sakulchangsatjatai
,
P.
,
Terdtoon
,
P.
,
Wongratanaphisan
,
T.
,
Kamonpet
,
P.
, and
Murakami
,
M.
, 2004, “
Operation Modeling of Closed-End and Closed-Loop Oscillating Heat Pipes at Normal Operating Condition
,”
Appl. Therm. Eng.
1359-4311,
24
(
7
), pp.
995
1008
.
18.
Dobson
,
R. T.
, 2004, “
Theoretical and Experimental Modelling of an Open Oscillatory Heat Pipe Including Gravity
,”
Int. J. Therm. Sci.
1290-0729,
43
(
2
), pp.
113
119
.
19.
Dobson
,
R. T.
, 2005, “
An Open Oscillatory Heat Pipe Water Pump
,”
Appl. Therm. Eng.
1359-4311,
25
(
4
), pp.
603
621
.
20.
Zhang
,
Y.
, and
Faghri
,
A.
, 2002, “
Heat Transfer in a Pulsating Heat Pipe With Open End
,”
Int. J. Heat Mass Transfer
0017-9310,
45
(
4
), pp.
755
764
.
21.
Holley
,
B.
, and
Faghri
,
A.
, 2005, “
Analysis of Pulsating Heat Pipe With Capillary Wick and Varying Channel Diameter
,”
Int. J. Heat Mass Transfer
0017-9310,
48
(
13
), pp.
2635
2651
.
22.
Senjaya
,
R.
,
Inoue
,
T.
, and
Suzuki
,
Y.
, 2010, “
Oscillating Heat Pipe Simulation With Bubble Generation
,”
Proceedings of the 15th International Heat Pipe Conference
, Clemson University.
23.
Nikolayev
,
V. S.
, 2011, “
Comment on ‘Flow and Heat Transfer of Liquid Plug and Neighboring Vapor Slugs in a Pulsating Heat Pipe’ by Yuan, Qu, & Ma
,”
Int. J. Heat Mass Transfer
0017-9310,
54
(
9–10
), pp.
2226
2227
.
24.
Bejan
,
A.
, 2004,
Convection Heat Transfer
,
3rd ed.
,
Wiley
,
Hoboken
.
25.
Patankar
,
S. V.
, 1980,
Numerical Heat Transfer and Fluid Flow
,
Hemisphere
,
Washington
.
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