d263566670
* add deprecation warning for int ReactorBase::type() (to be changed after Cantera 2.5) * introduce temporary std::string ReactorBase::typeStr() (to be renamed after Cantera 2.5) * deprecate all functions using the old call and introduce associated temporary functions
119 lines
4 KiB
Matlab
119 lines
4 KiB
Matlab
function x = Wall(left, right, area, k, u, q, v)
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% WALL Wall class constructor.
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% x = Wall(left, right, area, k, u, q, v)
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% A Wall separates two reactors, or a reactor and a reservoir. A wall has a
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% finite area, may conduct heat between the two reactors on either
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% side, and may move like a piston.
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%
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% Walls are stateless objects in Cantera, meaning that no differential
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% equation is integrated to determine any wall property. Since it is the wall
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% (piston) velocity that enters the energy equation, this means that it is
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% the velocity, not the acceleration or displacement, that is specified.
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% The wall velocity is computed from
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%
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% .. math:: v = K(P_{\rm left} - P_{\rm right}) + v_0(t),
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%
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% where :math:`K` is a non-negative constant, and :math:`v_0(t)` is a
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% specified function of time. The velocity is positive if the wall is
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% moving to the right.
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%
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% The heat flux through the wall is computed from
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%
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% .. math:: q = U(T_{\rm left} - T_{\rm right}) + q_0(t),
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%
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% where :math:`U` is the overall heat transfer coefficient for
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% conduction/convection. The function
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% :math:`q_0(t)` is a specified function of time. The heat flux is positive
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% when heat flows from the reactor on the left to the reactor on the right.
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%
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% Note: all of the arguments are optional and can be activated after initial
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% construction by using the various methods of the :mat:func:`Wall` class.
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% Any improperly specified arguments will generate warnings; these can be ignored
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% if the intention was to not use a particular argument. Thus, the velocity of
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% the wall can be set by using empty strings or 0.0 for each of the arguments before
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% the velocity with no harm.
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%
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% :param left:
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% Instance of class :mat:func:`Reactor` to be used as the bulk phase on
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% the left side of the wall. See :mat:func:`install`
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% :param right:
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% Instance of class :mat:func:`Reactor` to be used as the bulk phase on
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% the right side of the wall. See :mat:func:`install`
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% :param area:
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% The area of the wall in m**2. See :mat:func:`area` and :mat:func:`setArea`.
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% Defaults to 1.0 m**2 if not specified.
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% :param k:
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% Expansion rate coefficient in m/(s-Pa). See :mat:func:`setExpansionRateCoeff`
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% and :mat:func:`vdot`. Defaults to 0.0 if not specified.
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% :param u:
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% Heat transfer coefficient in W/(m**2-K). See :mat:func:`setHeatTransferCoeff`
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% and :mat:func:`qdot`. Defaults to 0.0 if not specified.
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% :param q:
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% Heat flux in W/m**2. Must be an instance of :mat:func:`Func`. See
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% :mat:func:`setHeatFlux` and :mat:func:`qdot`. Defaults to 0.0 if not specified.
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% :param v:
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% Velocity of the wall in m/s. Must be an instance of :mat:func:`Func`. See
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% :mat:func:`setVelocity` and :mat:func:`vdot`. Defaults to 0.0 if not specified.
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% :return:
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% Instance of class :mat:func:`Wall`
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% At the moment, only one wall type is implemented
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typ = 'Wall';
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x.type = char(typ);
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x.index = wallmethods(0, x.type);
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if x.index < 0
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error(geterr);
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end
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x.left = -1;
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x.right = -1;
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x = class(x, 'Wall');
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if nargin >= 2
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if isa(left, 'Reactor') && isa(right, 'Reactor')
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install(x, left, right);
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else
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warning(['left and/or right were not instances of Reactor, ' ...
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'and were not installed.'])
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end
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end
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if nargin >= 3
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if isnumeric(area)
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setArea(x, area);
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else
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warning('area was not a number and the area was not set')
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end
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end
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if nargin >= 4
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if isnumeric(k)
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setExpansionRateCoeff(x, k);
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else
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warning('k was not a number and the expansion rate coefficient was not set')
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end
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end
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if nargin >= 5
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if isnumeric(u)
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setHeatTransferCoeff(x, u);
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else
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warning('u was not a number and the expansion rate coefficient was not set')
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end
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end
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if nargin >= 6
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if isa(q, 'Func')
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setHeatFlux(x, q);
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else
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warning('q was not an instance of Func and was not set')
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end
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end
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if nargin >= 7
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if isa(v, 'Func')
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setVelocity(x, v)
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else
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warning('v was not an instance of Func and was not set')
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end
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end
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