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NDSolve::tvic NDSolveValue::tvic ParametricNDSolve::tvic ParametricNDSolveValue::tvic

NDSolve::tvic NDSolveValue::tvic ParametricNDSolve::tvic ParametricNDSolveValue::tvic

Details

  • This message is generated when the value of the indicated option is a variable that cannot be used as the temporal variable.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[NDSolve::tvic].

Examples

Basic Examples  (1)

An error occurs because the equations are such that the variable specified as the value of the TemporalVariable option cannot be used as the temporal variable:

Wolfram Language code: NDSolve[{D[u[x, t], t] == D[u[x, t], x, x], u[x, 0] == Exp[-100 x ^ 2]}, u, {x, -1, 1}, {t, 0, 2}, Method -> {MethodOfLines, TemporalVariable -> x}]

Most likely, the temporal variable was supposed to be . When sufficient boundary conditions are also supplied, the PDE can be solved:

Wolfram Language code: NDSolve[{D[u[x, t], t] == D[u[x, t], x, x], u[x, 0] == Exp[-100 x ^ 2], u[-1, t] == E ^ (-100), u[1, t] == E ^ (-100)}, u, {x, -1, 1}, {t, 0, 2}, Method -> {MethodOfLines, TemporalVariable -> t}]