static void outputWaterCut(const Opm::Watercut& watercut, const std::string& output_dir) { // Write water cut curve. std::string fname = output_dir + "/watercut.txt"; std::ofstream os(fname.c_str()); if (!os) { OPM_THROW(std::runtime_error, "Failed to open " << fname); } watercut.write(os); }