From e332861aacacbccd40fdfaad1f946a7449fc780a Mon Sep 17 00:00:00 2001
From: Baptiste Mouginot <15145274+bam241@users.noreply.github.com>
Date: Sat, 19 Aug 2023 00:43:59 +0200
Subject: [PATCH] adding cell name to volume calculation when possible (#2652)

---
 src/volume_calc.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/volume_calc.cpp b/src/volume_calc.cpp
index 0b1ea35750..b58da47508 100644
--- a/src/volume_calc.cpp
+++ b/src/volume_calc.cpp
@@ -534,8 +534,17 @@ int openmc_calculate_volumes()
 
       // Display domain volumes
       for (int j = 0; j < vol_calc.domain_ids_.size(); j++) {
-        write_message(4, "{}{}: {} +/- {} cm^3", domain_type,
-          vol_calc.domain_ids_[j], results[j].volume[0], results[j].volume[1]);
+        std::string cell_name {""};
+        if (vol_calc.domain_type_ == VolumeCalculation::TallyDomain::CELL) {
+          int cell_idx = model::cell_map[vol_calc.domain_ids_[j]];
+          cell_name = model::cells[cell_idx]->name();
+          if (cell_name.size())
+            cell_name.insert(0, " "); // prepend space for formatting
+        }
+
+        write_message(4, "{}{}{}: {} +/- {} cm^3", domain_type,
+          vol_calc.domain_ids_[j], cell_name, results[j].volume[0],
+          results[j].volume[1]);
       }
 
       // Write volumes to HDF5 file