Influence of temperature and salinity on hydrodynamic forces

Abstract

Sobre el diagrama de fuerzas de inercia y de arrastre en un pilote empleado en energía eólica marina se analiza el efecto de la temperatura y la salinidad y, por ello, la relevancia en la turbulencia, Reynolds, CD y CM respectivamente.
The
purpose
of
this
study
is
to
introduce
an
innovative
approach
to
offshore
engineering
so
as
to
take
variations
in
sea
temperature
and
salinity
into
account
in
the
calculation
of
hydrodynamic
forces.
With
this
in
mind,
a
thorough
critical
analysis
of
the
influence
of
sea
temperature
and
salinity
on
hydrodynamic
forces
on
piles
like
those
used
nowadays
in
offshore
wind
farms
will
be
carried
out.
This
influence
on
hydrodynamic
forces
occurs
through
a
change
in
water
density
and
viscosity
due
to
temperature
and
salinity
variation.
Therefore,
the
aim
here
is
to
observe
whether
models
currently
used
to
estimate
wave
forces
on
piles
are
valid
for
different
ranges
of
sea
temperature
and
salinity
apart
from
observing
the
limit
when
diffraction
or
nonlinear
effects
arise
combining
both
effects
with
the
magnitude
of
the
pile
diameter.
Hence,
specific
software
has
been
developed
to
simulate
equations
in
fluid
mechanics
taking
into
account
nonlinear
and
diffraction
effects.
This
software
enables
wave
produced
forces
on
a
cylinder
supported
on
the
sea
bed
to
be
calculated.
The
study
includes
observations
on
the
calculation
model’s
sensitivity
as
to
a
variation
in
the
cylinder’s
diameter,
on
the
one
hand
and,
on
the
other,
as
to
temperature
and
salinity
variation.
This
software
will
enable
an
iterative
calculation
to
be
made
for
finding
out
the
shape
the
pressure
wave
caused
when
a
wave
passes
over
will
have
for
different
pile
diameters
and
water
with
different
temperature
and
salinity.