diff --git a/app/src/components/Warehouse3D.tsx b/app/src/components/Warehouse3D.tsx
index d7f6002..3cc3632 100644
--- a/app/src/components/Warehouse3D.tsx
+++ b/app/src/components/Warehouse3D.tsx
@@ -80,13 +80,13 @@ function WindDirectionIndicator({ angle, width, length, height }: { angle: numbe
   const isDark = useCanvasTheme() === 'dark';
   const color = isDark ? "#38bdf8" : "#0284c7"; // Light blue / dark blue
   
-  // Angle 0: Wind blows along Z axis (Perpendicular à largura X)
-  // Angle 90: Wind blows along X axis (Paralelo à largura X)
+  // Angle 0: Vento bate na Parede C (Eixo X) - Perpendicular ao comprimento
+  // Angle 90: Vento bate na Parede A (Eixo Z) - Perpendicular à largura
   
-  const dir = angle === 0 ? new THREE.Vector3(0, 0, 1) : new THREE.Vector3(1, 0, 0);
+  const dir = angle === 90 ? new THREE.Vector3(0, 0, 1) : new THREE.Vector3(1, 0, 0);
   
   const distance = Math.max(width, length) * 0.6 + 5;
-  const startPos = angle === 0 ? new THREE.Vector3(0, height / 2, -distance) : new THREE.Vector3(-distance, height / 2, 0);
+  const startPos = angle === 90 ? new THREE.Vector3(0, height / 2, -distance) : new THREE.Vector3(-distance, height / 2, 0);
   
   const quat = new THREE.Quaternion();
   quat.setFromUnitVectors(new THREE.Vector3(0, 1, 0), dir);
diff --git a/app/src/components/three/AirflowSystem.tsx b/app/src/components/three/AirflowSystem.tsx
index e723473..4cee957 100644
--- a/app/src/components/three/AirflowSystem.tsx
+++ b/app/src/components/three/AirflowSystem.tsx
@@ -61,9 +61,9 @@ export function AirflowSystem({ windAngle, width, length, height, permeabilityCa
     if (!meshRef.current) return;
     const time = state.clock.elapsedTime;
     
-    // Agora 0° é paralelo à Parede A (ao longo do eixo Z)
-    // E 90° é paralelo à Parede C (ao longo do eixo X)
-    const isZAxis = windAngle === 0;
+    // Agora 0° é paralelo à Parede A e bate na Parede C (Eixo X)
+    // E 90° é paralelo à Parede C e bate na Parede A (Eixo Z)
+    const isZAxis = windAngle === 90;
     const windDir = isZAxis ? new THREE.Vector3(0, 0, 1) : new THREE.Vector3(1, 0, 0);
     
     const halfW = width / 2;
@@ -98,11 +98,11 @@ export function AirflowSystem({ windAngle, width, length, height, permeabilityCa
         // Colisão: Expulsar as partículas do interior com força (Desvio realístico)
         const isAirtight = permeabilityCase !== 'four-equally-permeable';
         if (isAirtight) {
-          if (windAngle === 0 && pz < -halfL + margin) {
+          if (windAngle === 90 && pz < -halfL + margin) {
             deflectY = p.baseSpeed * 2.0; // Levanta pro telhado
             deflectX = px > 0 ? p.baseSpeed * 2.0 : -p.baseSpeed * 2.0; // Contorna laterais
             p.position.z -= p.baseSpeed * 1.5; // Impede de avançar
-          } else if (windAngle === 90 && px < -halfW + margin) {
+          } else if (windAngle === 0 && px < -halfW + margin) {
             deflectY = p.baseSpeed * 2.0; // Levanta pro telhado
             deflectZ = pz > 0 ? p.baseSpeed * 2.0 : -p.baseSpeed * 2.0; // Contorna laterais
             p.position.x -= p.baseSpeed * 1.5; // Impede de avançar
diff --git a/app/src/pages/GalpaoModule.tsx b/app/src/pages/GalpaoModule.tsx
index 7cdee01..7e79cb0 100644
--- a/app/src/pages/GalpaoModule.tsx
+++ b/app/src/pages/GalpaoModule.tsx
@@ -236,8 +236,8 @@ const GalpaoModule: React.FC = () => {
                       <SelectValue placeholder="Selecione a direção" />
                     </SelectTrigger>
                     <SelectContent>
-                      <SelectItem value="0">0° (Perpendicular à largura)</SelectItem>
-                      <SelectItem value="90">90° (Paralelo à largura)</SelectItem>
+                      <SelectItem value="0">0° (Perpendicular ao comprimento)</SelectItem>
+                      <SelectItem value="90">90° (Perpendicular à largura)</SelectItem>
                     </SelectContent>
                   </Select>
                 </div>