From 76270c07a0bca28ca0b53d5ccabaa8b5894c4652 Mon Sep 17 00:00:00 2001
From: Mark Olesen <Mark.Olesen@esi-group.com>
Date: Mon, 21 Jun 2021 16:27:32 +0200
Subject: [PATCH] BUG: noise did not set num of output fields (VTK legacy)
 [fixes #2133]

---
 .../noise/noiseModels/surfaceNoise/surfaceNoise.C               | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/randomProcesses/noise/noiseModels/surfaceNoise/surfaceNoise.C b/src/randomProcesses/noise/noiseModels/surfaceNoise/surfaceNoise.C
index 49f7280c8b..ce45263be2 100644
--- a/src/randomProcesses/noise/noiseModels/surfaceNoise/surfaceNoise.C
+++ b/src/randomProcesses/noise/noiseModels/surfaceNoise/surfaceNoise.C
@@ -290,6 +290,7 @@ Foam::scalar surfaceNoise::writeSurfaceData
                     false  // serial - already merged
                 );
 
+                writerPtr_->nFields() = 1; // Legacy VTK
                 writerPtr_->write(title, allData);
 
                 writerPtr_->endTime();
@@ -321,6 +322,7 @@ Foam::scalar surfaceNoise::writeSurfaceData
                 false  // serial - already merged
             );
 
+            writerPtr_->nFields() = 1; // Legacy VTK
             writerPtr_->write(title, data);
 
             writerPtr_->endTime();