Ann.
Acad.
Rom.
Sci.
Ser.
Math.
Appl.
ISSN
2066-6594
Vol.
18,
No.
4/2026
DEDICATION
TO
PROFESSOR
CONSTANTIN
FETECAU
ON
HIS
80th
ANNIVERSARY
Gheorghe
Moros
,
anu
⇤
My
warm
congratulations
to
Professor
Constantin
Fetecau,
a
remarkable
researcher
in
the
field
of
Fluid
Mechanics
1
Biographical
Sketch
Constantin
Fetecau
was
born
on
January
4,
1946,
in
Scort
,
oasa,
Buz˘
au
County,
Romania.
Skipping
over
his
childhood
and
adolescence,
let
us
notice
that
in
1968
he
graduated
in
Math-
ematics
from
the
Alexandru
Ioan
Cuza
University
of
Ia¸
si,
Romania,
being
immediately
appointed
as
a
researcher
at
the
Mathematics
Institute
of
the
Romanian
Academy
–
Ia¸
si
branch
(1968–1975).
He
continued
for
a
long
time
at
the
Gheorghe
Asachi
Technical
University
of
Ias
,
i,
first
as
an
as-
sistant
professor
(1975-1979),
then
as
a
lecturer
(1979-1990),
associate
pro-
fessor
(1990-1994),
and
full
professor
(1994-2011).
During
the
time
interval
2011-2016
he
worked
with
an
employment
contract
(as
a
retired
professor)
at
the
same
Gheorghe
Asachi
Technical
University.
Professor
Constantin
Fetecau
was
a
talented
educator
and
many
genera-
tions
of
students
from
some
departments
of
the
Gheorghe
Asachi
Technical
University
of
Ias
,
i
benefited
from
his
lessons,
textbooks
and
monographs.
⇤
gheorghe.morosanu@ubbcluj.ro
,
Babes
,
-Bolyai
University,
Cluj-Napoca,
Romania
&
Academy
of
Romanian
Scientists,
Bucharest,
Romania
5
6
On
November
6,
2014,
he
was
awarded
the
title
of
professor
emeritus
of
the
Gheorghe
Asachi
Technical
University
of
Ias
,
i.
Let
us
mention
that
Professor
Fetecau
was
also
a
liated
with
the
Gov-
ernment
College
(GC)
University
in
Lahore,
Pakistan
(2007-2017),
where
he
was
a
very
active
PhD
supervisor.
Last
but
not
least,
let
us
mention
that
he
is
a
full
member
of
the
Academy
of
Romanian
Scientists:
https://www.aosr.ro/membrii-sectiei-stiinte-matematice/
2
Scientific
Activity
In
1979
he
obtained
a
PhD
in
Mathematics
from
the
Alexandru
Ioan
Cuza
University
of
Ias
,
i,
with
a
dissertation
entitled
”The
study
of
constitutive
equations
and
motions
of
particular
continuous
media”,
under
the
supervi-
sion
of
Acad.
Prof.
Mendel
Haimovici
and
Prof.
Gheorghe
Gheorghiev.
Professor
Constantin
Fetecau
has
always
been
and
continues
to
be
a
passionate
researcher
and
a
very
active
PhD
supervisor
at
the
GC
University
in
Lahore,
Pakistan.
His
main
research
areas
are:
-
Constitutive
equations
of
Newtonian
and
non-Newtonian
fluids;
-
Exact
and
numerical
solutions
for
motions
of
ordinary
or
fractional
Newtonian
and
non-Newtonian
fluids;
-
Heat
and
mass
transfer
in
chemical
engineering;
-
Energetic
balance
for
di
↵
erent
motions
of
Newtonian
and
non-Newtonian
fluids;
-
General
solutions
for
MHD
free
convection
flows
of
viscous
fluids
through
porous
media;
-
Newtonian
and
non-Newtonian
fluids
with
pressure-dependent
viscos-
ity;
-
MHD
free
convection
flows
of
ordinary
or
fractional
Newtonian
and
Non-Newtonian
fluids
through
porous
media;
-
Exact
solutions
for
motions
of
Newtonian
and
Maxwell
fluids
with
pressure
dependent
viscosity.
He
has
obtained
(alone
or
jointly
with
other
researchers)
many
significant
results
in
the
above-mentioned
fields
(check,
for
example,
at
MathSciNet
or
Google
Scholar
).
7
3
PhD
Supervision
Below
is
the
list
of
students
from
Pakistan
who
obtained
their
PhD
un-
der
the
supervision
of
Professor
Constantin
Fetecau,
plus
the
titles
of
their
dissertations:
1.
Amir
Mahmood
(2009),
Some
new
results
in
the
theory
of
non-Newtonian
fluids.
Exact
solutions
and
energetic
balance
2.
Mudassar
Nazar
(2009),
Analytical
solutions
for
some
unsteady
flows
of
second
grade
and
rate
type
fluids
3.
Waseem
Akhtar
(2009),
Exact
solutions
for
some
unsteady
flows
of
non-Newtonian
fluids
of
rate
type
4.
Muhammad
Athar
(2010),
Advancements
in
the
theory
of
generalized
non-Newtonian
fluids
5.
Muhammad
Kamran
(2010),
New
results
in
the
theory
of
ordinary
and
generalized
non-Newtonian
fluids
6.
Muhammad
Jamil
(2011),
Non-Newtonian
fuid
flows:
Exact
analytical
solutions
and
numerical
results
7.
Muhammad
Imran
Chaudhry
(2012),
Some
new
results
in
the
theory
of
fractional
second
grade
and
ordinary
Oldroyd-B
fluids
8.
Aziz
Ullah
Awan
(2012),
Exact
analytical
solutions
for
some
motions
of
bf
non-Newtonian
fluids
in
cylindrical
domains
9.
Nazish
Shahid
(2013),
Some
new
results
on
transport
phenomena
of
fluids
and
quantum
Fermi
liquids
10.
Muhammad
Imran
Asjad
(2013),
Unsteady
flows
of
some
rate
type
fluids
11.
Sohail
Ahmad
(2013),
Analytic
solutions
and
numerical
results
for
di
↵
erent
motions
of
Netonian
and
Non-Newtonian
fluids
12.
Azhar
Ali
Zafar
(2014),
Exact
solutions
for
di
↵
erent
motions
of
non-
Newtonian
fluids
with/without
fractional
derivatives
13.
Abdul
Rauf
(2014),
Some
flows
of
non-Newtonian
fluids
14.
Mehwish
Rana
(2014),
New
results
regarding
the
motion
of
Newtonian
and
non-Newtonian
fluids
due
to
a
shear
stress
on
the
boundary
15.
Niat
Nigar
Javed
(2017),
Free
convection
flows
of
a
viscous
fluid
and
various
motions
of
rate
type
fluids
8
16.
Shahraz
Akhtar
(2017),
Natural
convection
flows
of
viscous
fluids
and
di
↵
erent
motions
of
couple
stress
fluids
17.
Nehad
Ali
Shah
(2019),
Heat
and
mass
transfer
in
hydromagnetic
flows
of
viscous
fluids
over
a
flat
plate.
I
have
intentionally
presented
the
above
list
of
dissertations
to
highlight
some
of
the
most
important
research
interests
of
Professor
Constantin
Fete-
cau.
4
Awards
and
Recognition
for
Professor
Constantin
Fetecau
•
Spiru
Haret
Prize
of
the
Romanian
Academy
(2002)
•
Best
Ph.D.
Supervisor
of
the
GC
University,
Lahore,
Pakistan
(2010)
•
Research
Excellence
Award
and
Gheorghe
Asachi
Medal
of
the
Gheorghe
Asachi
Technical
University
of
Ias
,
i,
Romania
(2012)
•
Fulbright
grant,
October
2003
-
May
2004
at
A&M
University
of
Texas
(partner
of
collaboration:
Prof.
K.R.
Rajagopal)
•
DAAD
Scholarship
(Hamburg
and
Bayreuth
Universities,
Germany,
De-
cember
1,
2004
-
February
1,
2005
(partners
of
collaboration:
Prof.
G.
B¨
ohme
and
Prof
N.
Aksel)
-
Ad
Astra
Registry
of
Romanian
Scientists
(2002-2011)
•
1st
place
by
Impact
Factor
in
the
Multidisciplinary
Engineering
category
•
2nd
place
by
Impact
Factor
in
the
Mechanics
category
•
2nd
place
by
number
of
articles
in
the
Applied
Mathematics
category.
-
World’s
Top
2%
Scientists
,
2021-25
(Stanford
University,
USA)
-
2nd
place
Best
Mechanical
and
Aerospace
Engineering
Scientists
in
Roma-
nia
(2025),
https://research.com/scientists-rankings/mechanical-and/aeros
pace-engineering/ro
-
3rd
place
Best
Mathematics
Scientists
in
Romania
(2025),
https://research.com/scientistsrankings/mathematics/ro
9
-
Guest
Editor
and
Member
of
Editorial
Committees
1)
Guest
Editor
along
with
Prof.
Rahmat
Ellahi
and
Prof.
Mohsen
Sheik-
holeslami
for
the
Special
Issue
”Recent
Advances
in
the
Application
of
Di
↵
er-
ential
Equations
in
Mechanical
Engineering
Problems”
of
the
journal
Math-
ematical
Problems
in
Engineering
2)
Guest
Editor
along
with
Dr.
Zhan
Ma
for
the
Special
Issue
”Recent
Ad-
vances
of
Symmetry
in
Computational
Fluid
Dynamics”,
in
the
Mathematics
section
of
the
journal
Symmetry
3)
Academic
Editor
or
Member
of
the
Editorial
Boards
of
di
↵
erent
ISI
or
non
ISI
journals,
for
instance:
a)
Mathematical
Problems
in
Engineering
,
b)
Communications
in
Nonlinear
Science
and
Numerical
Simulations
,
c)
Sym-
metry
,
d)
Open
Journal
of
Mathematical
Sciences
,
e)
International
Journal
of
Advances
and
Applied
Sciences
,
f)
Journal
of
Computational
Analysis
.
May
7,
2026
Prof.
Gheorghe
Moros
,
anu
Acknowledgements
.
Let
me
express
my
heartfelt
gratitude
to
all
the
colleagues
who
accepted
my
invitation
(issued
via
a
call
for
papers
)
and
con-
tributed—through
the
articles
included
in
the
following
pages—to
honoring
Professor
Constantin
Fetecau
on
the
occasion
of
his
80th
birthday.
November
2,
2026
Prof.
Gheorghe
Moros
,
anu