- If applied:
This commit allows the user to compute:
- the Lamb vector (https://en.wikipedia.org/wiki/Lamb_vector),
- on-the-fly or via postProcess utility
- for a given volVectorField (one per functionObject entry)
- Why:
The motivation is the literature-reported quantitative connection
between the Lamb vector (divergence) and the spatially localised
instantaneous fluid motions, e.g. high- and low-momentum fluid
parcels, which possess considerable level of capacity to affect
the rate of change of momentum, and to generate forces such as drag.
- Verification:
- Smooth-wall plane channel flow case (Moser et al. 1999) by
# Curtis et al. (2008) On the Lamb vector divergence
in Navier–Stokes flows, doi:10.1017/S0022112008002760
- What's next:
- The verification-show case
- Extended code guide entry titled "Lamb vector"
- remove registration and ownership before deleting a regIOobject
from within objectRegistry to avoid possible recursion.
- regIOobject destructor now removes any registered object from
registry regardless if ownedByRegistry or not. It also removes
always removes the ownership flag to avoid possible recursion.
- the regIOobject::checkOut() now unconditionally clears file watches.
These will only be there if the object is registered (a no-op for an
unregistered object), but this additional safety is needed to manage
case where the registration has been modified elsewhere (eg, by the
objectRegistry).
ENH: define addition/subtraction operations for scalar and complex
- required since construct complex from scalar is explicit
- additional tests in Test-complex
- forces c++DBUG='-DFULLDEBUG -g -O0' for the compilation, to allow
localized debugging during development without file editing and
while retaining the WM_COMPILE_OPTION (eg, Opt)
Note that switching between 'wmake' and 'wmake -debug' will not
cause existing targets to be rebuilt. As before, these are driven by
the dependencies. An intermediate wclean may thus be required.
- additional coefficients:
- Side force coefficient: direction in curl(lift,drag),
- Yaw moment coefficient: rotation axis in dir(lift)
- Roll moment coefficient: rotation axis in dir(drag)
Order of output
- forces(drag,side,lift)
- moments(roll,pitch,yaw)
Note
- For force coeffs, front and rear axles' contributions are computed
Calculates and outputs the pressure fields p_rgh and ph_rgh based on the
option that was previously hard-coded in the fireFoam solver
Usage
Example of function object specification to calculate hydrostatic pressure:
\verbatim
hydrostaticPressure1
{
type hydrostaticPressure;
libs ("libinitialisationFunctionObjects.so");
...
}
\endverbatim
Where the entries comprise:
\table
Property | Description | Required | Default value
log | Log to standard output | no | yes
p_rgh | Name of p_rgh field | no | p_rgh
ph_rgh | Name of ph_rgh field | no | ph_rgh
pRef | Name of pressure ref field | no | pRef
rho | Name of density field | no | rho
U | Name of velocity field | no | U
gh | Name of gravity*height volume field | no | gh
ghf | Name of gravity*height surface field | no | ghf
nCorrectors | Number of correctors when solving ph_rgh | no | 5
\endtable
Note
Calculates the hydrostatic pressure on construction/re-initialisation;
the execute and write functions are not used.
- generalize identity matrix constructors for non-scalar types
- add constructors using labelPair for the row/column sizing information.
For a SquareMatrix, this provides an unambiguous parameter resolution.
- reuse assignment operators
STYLE: adjust matrix comments
- adjust naming of quaternion 'rotationSequence' to be 'eulerOrder'
to reflect its purpose.
- provide rotation matrices directly for these rotation orders in
coordinateRotations::euler for case in which the rotation tensor
is required but not a quaternion.
Modified revert of commit 6c6f777bd5.
- The "alphaContactAngleFvPatchScalarField" occurs in several
places in the code base:
- as abstract class for two-phase properties
- in various multiphase solvers
To resolve potential linking conflicts, renamed the abstract class
as "alphaContactAngleTwoPhaseFvPatchScalarField" instead.
This permits potential linking of two-phase and multi-phase
libraries without symbol conflicts and has no effect on concrete
uses of two-phase alphaContactAngle boudary conditions.
- support move insert/set and emplace insertion.
These adjustments can be used for improved memory efficiency, and
allow hash tables of non-copyable objects (eg, std::unique_ptr).
- extend special HashTable output treatment to include pointer-like
objects such as autoPtr and unique_ptr.
ENH: HashTable::at() method with checking. Fatal if entry does not exist.
