The Physics and Variables Selection, Values of Dependent Variables, Mesh Selection, Adaptation and Error Estimates, and Geometric Entity Selection for Adaptation sections and the Include geometric nonlinearity check box are described in Common Study Step Settings. There is also detailed information in the Physics and Variables Selection and Values of Dependent Variables sections.
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Manual (the default), to specify some search criteria manually. See Manual Eigenfrequency Search Settings below.
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Region, to define an eigenfrequency search region in a complex plane. See Eigenvalue Search Region Settings below.
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Select Closest in absolute value (the default value) to search for eigenfrequencies that are closest to the shift value when measuring the distance as an absolute value.
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Select Larger real part to search for eigenfrequencies with a larger real part than the shift value.
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Select Smaller real part to search for eigenfrequencies with a smaller real part than the shift value.
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Select Larger imaginary part to search for eigenfrequencies with a larger imaginary part than the shift value.
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Select Smaller imaginary part to search for eigenfrequencies with a smaller imaginary part than the shift value.
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Tuning Fork: Application Library path COMSOL_Multiphysics/Structural_Mechanics/tuning_fork.
For a model that uses a search region for the eigenfrequencies, with the Acoustics Module, see Helmholtz Resonator Analyzed with Different Frequency Domain Solvers: Application Library path Acoustics_Module/Tutorials,_Pressure_Acoustics/helmholtz_resonator_solvers.
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