the plane parallel solutions, the solutions have three parameters, the pressure of the CNM, the velocity of the front with respect to the centre, and the cloud radius. The second parameter corresponds to the mass flux in our solutions. They solved equations as the eigen- and boundary-value problem so that the solutions connect the CNM and WNM. Thus, the velocity of the front $v_f(P_\mathrm{c},R_\mathrm{c})$ is a function of $P_\mathrm{c}$ and cloud radius $R_\mathrm{c}$. The curvature effect enhance the heat flux by the thermal conduction from the CNM to the WNM. Thus, smaller cloud that has larger curvature tends to evaporate quickly. On the other hand, cold gas that has a negative curvature tends to gain mass by the condensation. Thus, the evolution of CNM cloud strongly depends on its shape.

By using the quasi-steady approximation, we can easily take into account curvature effect in our solutions. It is expected that solutions with larger evaporation rate connect the unstable phase and WNM while solutions with larger condensation rate connect the CNM and unstable phase.

Summary {#sec:summary}
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In this paper, we have investigated steady condensation solutions of phase transition layers in large parameter space $(P_\mathrm{c},j)$ much larger than previous works. We 