  We study hydrodynamic electron transport in Corbino graphene devices. Due to
the irrotational character of the flow, the forces exerted on the electron
liquid are expelled from the bulk. We show that in the absence of Galilean
invariance, force expulsion produces qualitatively new features in
thermoelectric transport: (i) it results in drops of both voltage and
temperature at the system boundaries and (ii) in conductance measurements in
pristine systems, the electric field is not expelled from the bulk. We obtain
thermoelectric coefficients of the system in the entire crossover region
between charge neutrality and high electron density regime. The thermal
conductance exhibits a sensitive Lorentzian dependence on the electron density.
The width of the Lorentzian is determined by the fluid viscosity. This enables
determination of the viscosity of electron liquid near charge neutrality from
purely thermal transport measurements. In general, the thermoelectric response
is anomalous: it violates the Matthiessen's rule, the Wiedemann-Franz law, and
the Mott relation.
